Station Overview Station Location
Station Number CO-BO-165 Latitude 40.0124
Station Name Boulder 1.8 ESE Longitude -105.2307
County Boulder Elevation (ft) 5266



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 19 1.29 1.50 15 1.50 15 0.00 0 0 6 0 17.7 6 2
Nov 19 0.95 2.58 25 2.58 25 0.00 0 0 7 0 24.1 5 2
Dec 19 0.72 0.32 31 0.32 31 0.00 0 0 5 3 2.6 4 0
Jan 20 0.59 0.00 30 0.00 30 0.00 0 0 0 2 0.0 0 0
Feb 20 0.61 1.94 29 1.94 29 0.00 0 0 12 0 28.8 10 0
March 20 1.83 2.58 31 2.58 31 0.00 0 0 9 2 13.9 5 0
April 20 2.22 2.74 30 2.74 30 0.00 0 0 10 0 32.6 6 0
May 20 2.59 1.88 31 1.88 31 0.00 0 0 9 1 0.0 0 0
June 20 2.03 1.91 30 1.91 30 0.00 0 0 9 4 0.0 0 0
July 20 1.69 0.52 31 0.52 31 0.00 0 0 6 5 0.0 0 0
Aug 20 1.60 0.51 28 0.51 28 0.00 0 0 6 7 0.0 0 0
Sept 20 1.56 1.49 24 1.49 24 0.00 0 0 4 1 3.6 1 0
Water Year Totals: 17.68" 17.97" 335 days 17.97" 335 0.00" 0 days 0 83 days 25 days 123.3" 37 days 4 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2019
10/2/2019
10/3/2019
10/4/2019
10/5/2019
10/6/2019
10/7/2019
10/8/2019
10/9/2019
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019
10/15/2019
10/16/2019
10/17/2019 0.00
10/18/2019 0.00
10/19/2019 0.00
10/20/2019 0.00
10/21/2019 0.00
10/22/2019 0.00
10/23/2019 0.00
10/24/2019 0.50
10/25/2019 0.00
10/26/2019 0.00
10/27/2019 0.22
10/28/2019 0.40
10/29/2019 0.13
10/30/2019 0.24
10/31/2019 0.01
11/1/2019 0.00
11/2/2019 0.00
11/3/2019 0.00
11/4/2019 0.00
11/5/2019 0.00
11/6/2019 0.00
11/7/2019 0.14
11/8/2019 0.00
11/9/2019 0.00
11/10/2019 0.00
11/11/2019 0.19
11/12/2019 0.01
11/13/2019 0.00
11/14/2019 0.01
11/15/2019 0.00
11/16/2019 0.00
11/17/2019 0.00
11/18/2019 0.00
11/19/2019 0.00
11/20/2019 0.00
11/21/2019
11/22/2019
11/23/2019
11/24/2019
11/25/2019
11/26/2019 1.97
11/27/2019 0.25
11/28/2019 0.00
11/29/2019 0.00
11/30/2019 0.01
12/1/2019 0.00
12/2/2019 0.00
12/3/2019 0.00
12/4/2019 0.00
12/5/2019 0.00
12/6/2019 0.13
12/7/2019 0.00
12/8/2019 0.00
12/9/2019 0.00
12/10/2019 T
12/11/2019 0.00
12/12/2019 0.00
12/13/2019 0.00
12/14/2019 T
12/15/2019 0.03
12/16/2019 0.00
12/17/2019 0.00
12/18/2019 0.00
12/19/2019 0.00
12/20/2019 0.00
12/21/2019 0.00
12/22/2019 0.00
12/23/2019 0.00
12/24/2019 0.00
12/25/2019 0.00
12/26/2019 T
12/27/2019 0.01
12/28/2019 0.11
12/29/2019 0.04
12/30/2019 0.00
12/31/2019 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.00
1/2/2020 0.00
1/3/2020 0.00
1/4/2020 0.00
1/5/2020 0.00
1/6/2020 0.00
1/7/2020 0.00
1/8/2020 0.00
1/9/2020 0.00
1/10/2020 0.00
1/11/2020 0.00
1/12/2020 0.00
1/13/2020 0.00
1/14/2020 0.00
1/15/2020
1/16/2020 0.00
1/17/2020 T
1/18/2020 0.00
1/19/2020 0.00
1/20/2020 0.00
1/21/2020 0.00
1/22/2020 0.00
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 0.00
1/26/2020 0.00
1/27/2020 0.00
1/28/2020 0.00
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 T
2/1/2020 0.00
2/2/2020 0.00
2/3/2020 0.06
2/4/2020 0.45
2/5/2020 0.06
2/6/2020 0.00
2/7/2020 0.24
2/8/2020 0.14
2/9/2020 0.10
2/10/2020 0.20
2/11/2020 0.32
2/12/2020 0.00
2/13/2020 0.18
2/14/2020 0.00
2/15/2020 0.00
2/16/2020 0.00
2/17/2020 0.00
2/18/2020 0.04
2/19/2020 0.00
2/20/2020 0.14
2/21/2020 0.00
2/22/2020 0.00
2/23/2020 0.00
2/24/2020 0.01
2/25/2020 0.00
2/26/2020 0.00
2/27/2020 0.00
2/28/2020 0.00
2/29/2020 0.00
3/1/2020 0.00
3/2/2020 0.32
3/3/2020 0.00
3/4/2020 0.00
3/5/2020 0.00
3/6/2020 0.00
3/7/2020 0.00
3/8/2020 0.00
3/9/2020 0.20
3/10/2020 0.00
3/11/2020 0.00
3/12/2020 0.00
3/13/2020 T
3/14/2020 0.12
3/15/2020 0.00
3/16/2020 0.00
3/17/2020 0.03
3/18/2020 0.01
3/19/2020 0.18
3/20/2020 1.60
3/21/2020 0.03
3/22/2020 0.00
3/23/2020 0.00
3/24/2020 T
3/25/2020 0.00
3/26/2020 0.00
3/27/2020 0.00
3/28/2020 0.09
3/29/2020 0.00
3/30/2020 0.00
3/31/2020 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020 0.06
4/3/2020 0.10
4/4/2020 0.00
4/5/2020 0.00
4/6/2020 0.00
4/7/2020 0.00
4/8/2020 0.00
4/9/2020 0.00
4/10/2020 0.00
4/11/2020 0.00
4/12/2020 0.37
4/13/2020 0.49
4/14/2020 0.09
4/15/2020 0.00
4/16/2020 1.15
4/17/2020 0.45
4/18/2020 0.00
4/19/2020 0.00
4/20/2020 0.00
4/21/2020 0.00
4/22/2020 0.00
4/23/2020 0.01
4/24/2020 0.01
4/25/2020 0.01
4/26/2020 0.00
4/27/2020 0.00
4/28/2020 0.00
4/29/2020 0.00
4/30/2020 0.00
5/1/2020 0.00
5/2/2020 0.00
5/3/2020 0.18
5/4/2020 0.06
5/5/2020 0.00
5/6/2020 0.00
5/7/2020 0.00
5/8/2020 0.02
5/9/2020 0.00
5/10/2020 0.00
5/11/2020 0.00
5/12/2020 0.13
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.18
5/16/2020 0.15
5/17/2020 0.00
5/18/2020 0.00
5/19/2020 0.00
5/20/2020 0.00
5/21/2020 0.00
5/22/2020 0.00
5/23/2020 T
5/24/2020 0.00
5/25/2020 0.98
5/26/2020 0.00
5/27/2020 0.00
5/28/2020 0.14
5/29/2020 0.00
5/30/2020 0.00
5/31/2020 0.04
6/1/2020 0.02
6/2/2020 T
6/3/2020 T
6/4/2020 0.00
6/5/2020 0.02
6/6/2020 0.00
6/7/2020 0.06
6/8/2020 0.00
6/9/2020 0.29
6/10/2020 T
6/11/2020 0.00
6/12/2020 0.00
6/13/2020 0.00
6/14/2020 0.02
6/15/2020 0.00
6/16/2020 0.00
6/17/2020 0.00
6/18/2020 0.00
6/19/2020 0.88
6/20/2020 0.21
6/21/2020 0.00
6/22/2020 0.19
6/23/2020 0.00
6/24/2020 0.00
6/25/2020 0.00
6/26/2020 0.00
6/27/2020 0.22
6/28/2020 0.00
6/29/2020 T
6/30/2020 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.08
7/2/2020 0.00
7/3/2020 0.00
7/4/2020 0.00
7/5/2020 0.00
7/6/2020 T
7/7/2020 0.00
7/8/2020 T
7/9/2020 0.00
7/10/2020 0.00
7/11/2020 0.00
7/12/2020 0.00
7/13/2020 0.00
7/14/2020 T
7/15/2020 0.02
7/16/2020 0.00
7/17/2020 0.00
7/18/2020 0.00
7/19/2020 T
7/20/2020 0.00
7/21/2020 0.00
7/22/2020 0.00
7/23/2020 0.01
7/24/2020 0.00
7/25/2020 0.24
7/26/2020 0.07
7/27/2020 0.00
7/28/2020 0.00
7/29/2020 0.10
7/30/2020 0.00
7/31/2020 T
8/1/2020 T
8/2/2020 T
8/3/2020 T
8/4/2020 T
8/5/2020 0.03
8/6/2020 0.09
8/7/2020 T
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.00
8/11/2020 0.00
8/12/2020 0.00
8/13/2020 T
8/14/2020 0.00
8/15/2020 0.00
8/16/2020 0.00
8/17/2020
8/18/2020
8/19/2020 0.00
8/20/2020 0.00
8/21/2020 0.13
8/22/2020 0.00
8/23/2020 0.00
8/24/2020 0.00
8/25/2020 0.00
8/26/2020 0.00
8/27/2020 T
8/28/2020 0.20
8/29/2020 0.05
8/30/2020 0.01
8/31/2020
9/1/2020 0.09
9/2/2020 0.00
9/3/2020 0.00
9/4/2020 0.00
9/5/2020 0.00
9/6/2020 0.00
9/7/2020 0.00
9/8/2020 0.27
9/9/2020 1.04
9/10/2020 0.09
9/11/2020 0.00
9/12/2020 0.00
9/13/2020 0.00
9/14/2020 0.00
9/15/2020 0.00
9/16/2020 0.00
9/17/2020 0.00
9/18/2020
9/19/2020 0.00
9/20/2020 0.00
9/21/2020 T
9/22/2020 0.00
9/23/2020 0.00
9/24/2020 0.00
9/25/2020 0.00
9/26/2020
9/27/2020
9/28/2020
9/29/2020
9/30/2020



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/17/2019 7:00 AM 0.00 0.0 M M M 76º / 42º
10/18/2019 7:00 AM 0.00 0.0 M M M 75º / 43º
10/19/2019 7:00 AM 0.00 0.0 M M M 65º / 34º
10/20/2019 7:00 AM 0.00 0.0 M M M 66º / 34º Windy overnight (w front passage)
10/21/2019 7:00 AM 0.00 0.0 M M M 52º / 34º Strong winds w gusts thru mid-afternoon
10/22/2019 7:00 AM 0.00 0.0 M M M 65º / 34º
10/23/2019 7:00 AM 0.00 0.0 M M M 55º / 44º
10/24/2019 7:00 AM 0.50 5.1 M M M 53º / 33º Occ Sprinkles ~ 2:15-8:15p (T) changing to snow thru ~ 3:45a (.5/5.1)
10/25/2019 7:00 AM 0.00 0.0 M M M 55º / 28º
10/26/2019 7:00 AM 0.00 0.0 M M M 61º / 34º
10/27/2019 7:00 AM 0.22 0.2 M 0.2 M 72º / 26º Occ freezing drizzle after midnight (temp ~ 29º) becoming snow flurries after 5:00a (temp ~ 27º) (.22/.2), continuing at 7:00a, w ~ 1/16" layer of ice on cylinder.
10/28/2019 7:00 AM 0.40 6.8 0.40 6.0 0.38 31º / 21º Snow flurries/lt snow at 7:00a, continuing at 2:30p (.03/1.0), becoming lt/mod snow ~ 3:45p-7:00a (.37/5.8), w flurries/lt snow 7:00a.
10/29/2019 7:00 AM 0.13 2.6 M M M 34º / 18º 7:00a Occ flurries/lt snow thru ~ 10:30a (.01/.2) Lt snow began after 4:00a, continuing at 7:00a (.12/2.4) with wind and gusts 10-25mph.
10/30/2019 7:00 AM 0.24 2.9 M M M 22º / 11º Lt snow at 7:00a with wind and gusts 10-25mph. After noon snow diminished to flurries, becoming flurries/occ lt snow showers ~ 2:30p-5:00a (.24/2.9)
10/31/2019 7:00 AM 0.01 0.1 M M M 28º / 11º Occ flurries/lt snow showers ~ 8:00-9:30a (.01/.1)
11/1/2019 7:00 AM 0.00 0.0 M M M 35º / 28º
11/2/2019 7:00 AM 0.00 0.0 M M M 43º / 19º
11/3/2019 7:00 AM 0.00 0.0 M M M 47º / 18º
11/4/2019 7:00 AM 0.00 0.0 M M M 53º / 29º
11/5/2019 7:00 AM 0.00 0.0 M M M 49º / 28º
11/6/2019 7:00 AM 0.00 0.0 M M M 59º / 29º
11/7/2019 7:00 AM 0.14 0.0 M M M 50º / 30º Occ drizzle / freezing drizzle ~ 3:30p-3:00a (.14)
11/8/2019 7:00 AM 0.00 0.0 M M M 48º / 27º
11/9/2019 7:00 AM 0.00 0.0 M M M 69º / 33º
11/10/2019 7:00 AM 0.00 0.0 M M M 76º / 33º Boulder record High 79º
11/11/2019 7:00 AM 0.19 2.6 M 2.5 M 69º / 17º A bit of freezing rain after midnight, changing to lt snow after 2:30a (.19/2.6) (freezing precip on cylinder)
11/12/2019 7:00 AM 0.01 0.2 M M M 32º / 15º Lt snow at 7:00a becoming occ lt flurries ~ 7:45-9:30a (.01/.2)
11/13/2019 7:00 AM 0.00 0.0 M M M 53º / 14º
11/14/2019 7:00 AM 0.01 0.0 M M M 59º / 35º (Lt overnight shower (.01)
11/15/2019 7:00 AM 0.00 0.0 M M M 55º / 35º
11/16/2019 7:00 AM 0.00 0.0 M M M 71º / 41º
11/17/2019 7:00 AM 0.00 0.0 M M M 63º / 31º
11/18/2019 7:00 AM 0.00 0.0 M M M 57º / 41º Breezy and mild this morning,
11/19/2019 7:00 AM 0.00 0.0 M M M 65º / 35º
11/20/2019 7:00 AM 0.00 0.0 M M M 63º / 34º
11/26/2019 7:00 AM 1.97 17.6 1.97 16.5 M 54º / 25º Lt snow w occ mod snow ~ 3:40-10:00p (.94/5.1) Mod/hvy snow 10:00p-7:00a (1.03/12.5) (NOTE: Precipitation measured from core samples.)
11/27/2019 7:00 AM 0.25 3.5 M M M 35 / 8º TOTAL SNOW THIS STORM 21.1" Mod/hvy snow at 7:00a, slowly diminishing to flurries/lt/mod snow ~ 10:00, ending ~ 11:45a (.25/3.5)
11/28/2019 7:00 AM 0.00 0.0 M M M 27º / 13º
11/29/2019 7:00 AM 0.00 0.0 M M M 31º / 13º Some mod evening fog starting ~ 9:50p, lasting thru ~ 4:30a
11/30/2019 7:00 AM 0.01 0.2 M M M 35º / 22º Lt snow ~ 7:00-7:50p (.01/.2)
12/1/2019 7:00 AM 0.00 0.0 M M M 39º / 15º
12/2/2019 7:00 AM 0.00 0.0 M M M 35º / 16º
12/3/2019 7:00 AM 0.00 0.0 M M M 50º / 22º
12/4/2019 7:00 AM 0.00 0.0 M M M 55º / 30º
12/5/2019 7:00 AM 0.00 0.0 M M M 51º / 33º
12/6/2019 7:00 AM 0.13 0.1 M M M 45º / 23º Frequent Lt rain/sprinkles 9:40a-6:15p, mixing w snow ~ 7:30p (.13/.1)
12/7/2019 7:00 AM 0.00 0.0 M M M 46º / 26º
12/8/2019 7:00 AM 0.00 0.0 M M M 59º / 35º
12/9/2019 7:00 AM 0.00 0.0 M M M 55º / 30º
12/10/2019 7:00 AM T T M M M 40º / 21º Lt flurries ~ 12:20-1:35p (T/T)
12/11/2019 7:00 AM 0.00 0.0 M M M 38º / 21º
12/12/2019 7:00 AM 0.00 0.0 M M M 53º / 31º
12/13/2019 7:00 AM 0.00 0.0 M M M 50º / 34º
12/14/2019 7:00 AM T T M M M 47º / 31º Lt flurries sometime before 6:00a (T/T)
12/15/2019 7:00 AM 0.03 0.2 M M M 39º / 25º A few occ flurries ~ 8:35-10:15a (T/T) Lt snow/flurries ~ 2:20-3:25p (.02/.2) A mix of fog, frezzing drizzle, and flurries after midnight thru 6:00a (.01/T)
12/16/2019 7:00 AM 0.00 0.0 M M M 35º / 25º
12/17/2019 7:00 AM 0.00 0.0 M M M 35º / 18º
12/18/2019 7:00 AM 0.00 0.0 M M M 42º / 18º
12/19/2019 7:00 AM 0.00 0.0 M M M 50º / 21º
12/20/2019 7:00 AM 0.00 0.0 M M M 48º / 23º
12/21/2019 7:00 AM 0.00 0.0 M M M 52º / 23º
12/22/2019 7:00 AM 0.00 0.0 M M M 59º / 24º
12/23/2019 7:00 AM 0.00 0.0 M M M 59º / 33º
12/24/2019 7:00 AM 0.00 0.0 M M M 57º / 32º
12/25/2019 7:00 AM 0.00 0.0 M M M 52º / 29º
12/26/2019 7:00 AM T 0.0 M M M 49º / 23º Freezing Fog/drizzle after 3:30a (T)
12/27/2019 7:00 AM 0.01 T M M M 34º / 22º Freezing fog/drizzle and a few flurries from 7:00-8:45a (.01/T)
12/28/2019 7:00 AM 0.11 1.8 0.11 M M 36º / 25º Lt snow began sometime after 3:00a continuing at 7:00a (.11/1.8}
12/29/2019 7:00 AM 0.04 0.5 M M M 35º / 21º Lt snow at 7:00a diminishing to flurries ~ 9:30a, ending ~ 12:15p (.04/.5)
12/30/2019 7:00 AM 0.00 0.0 M M M 36º / 21º
12/31/2019 7:00 AM 0.00 0.0 M M M 46º / 18º
1/1/2020 7:00 AM 0.00 0.0 M M M 46º / 18º
1/2/2020 7:00 AM 0.00 0.0 M M M 50º / 36º
1/3/2020 7:00 AM 0.00 0.0 M M M 46º / 28º
1/4/2020 7:00 AM 0.00 0.0 M M M 48º / 30º
1/5/2020 7:00 AM 0.00 0.0 M M M 63º / 32º
1/6/2020 7:00 AM 0.00 0.0 M M M 46º / 27º
1/7/2020 7:00 AM 0.00 0.0 M M M 43º / 32º
1/8/2020 7:00 AM 0.00 0.0 M M M 57º / 37º
1/9/2020 7:00 AM 0.00 0.0 M M M 59º / 32º
1/10/2020 7:00 AM 0.00 0.0 M M M 46º / 28º
1/11/2020 7:00 AM 0.00 0.0 M M M 34º / 14º
1/12/2020 7:00 AM 0.00 0.0 M M M 43º / 16º
1/13/2020 7:00 AM 0.00 0.0 M M M 45º / 21º
1/14/2020 7:00 AM 0.00 0.0 M M M 43º / 24º
1/16/2020 7:00 AM 0.00 0.0 M M M 46º / 20º
1/17/2020 7:00 AM T T M M M 49º / 21º Brief lt rain/snow mix shower ~ 10:50-11:05a (T/T)
1/18/2020 7:00 AM 0.00 0.0 M M M 50º / 25º
1/19/2020 7:00 AM 0.00 0.0 M M M 41º / 20º
1/20/2020 7:00 AM 0.00 0.0 M M M 49º / 18º
1/21/2020 7:00 AM 0.00 0.0 M M M 50º / 28º
1/22/2020 7:00 AM 0.00 0.0 M M M 51º / 34º
1/23/2020 7:00 AM 0.00 0.0 M M M 52º / 30º
1/24/2020 7:00 AM 0.00 0.0 M M M 45º / 23º
1/25/2020 7:00 AM 0.00 0.0 M M M 51º / 26º
1/26/2020 7:00 AM 0.00 0.0 M M M 54º / 25º
1/27/2020 7:00 AM 0.00 0.0 M M M 53º / 31º
1/28/2020 7:00 AM 0.00 0.0 M M M 46º / 24º
1/29/2020 7:00 AM 0.00 0.0 M M M 51º / 28º
1/30/2020 7:00 AM 0.00 0.0 M M M 46º / 32º
1/31/2020 7:00 AM T T M M M 44º / 21º A couple of midday flurries (T/T)
2/1/2020 7:00 AM 0.00 0.0 M M M 53º / 37º
2/2/2020 7:00 AM 0.00 0.0 M M M 62º / 37º
2/3/2020 7:00 AM 0.06 T M M M 73º / 27º Boulder record high 75º Drizzle/freezing drizzle began sometime after midnight, mixing w snow/pellets ~ 6:00a (.06/T)
2/4/2020 7:00 AM 0.45 8.3 M M M 28º / 16º Drizzle/lt snow mix at 7:00a, changing to lt snow by 8:45a. Mod/lt snow ~ 11:15-noon (.12/2.5) Lt snow/flurries noon-10:00p (.21/4.2) Lt snow 10:00p-7:00a (.12/1.7)
2/5/2020 7:00 AM 0.06 1.0 M M M 25º / 3º Lt snow at 7:00-8:15a . Occ flurries/lt snow ~ 9:50a-noon (.05/.8) Occ flurries noon-5:00p (.01/.2)
2/6/2020 7:00 AM 0.00 0.0 M M M 28º / 8º
2/7/2020 7:00 AM 0.24 2.8 0.24 M M 43º / 26º Lt snow ~ 7:30p-11:45p (.24/2.8)
2/8/2020 7:00 AM 0.14 1.5 M M M 35º / 19º Lt snow ~ 7:15a, tapering to flurries by 12:15p (.08/.9) Lt flurries (12:;15p-3:10p) w lt snow 3:10-4:15p. Occ flurries 4:15-7:15p (.06/.6)
2/9/2020 7:00 AM 0.10 1.3 M M M 53º / 23º Brief flurries ~ 10:50 --11:00p (T/T) Lt/mod snow sometime after 5:10a, continuing at 7:00a (.1/1.3)
2/10/2020 7:00 AM 0.20 2.4 M M M 39º / 14º Lt/mod snow 7:00 w occ lt snow/flurries thru 3:00p (.19/2.3) Occ flurries thru ~ 5:30p (.01/.1)
2/11/2020 7:00 AM 0.32 5.0 M M M 38º / 11º Lt snow ~ 6:40p becoming lt/mod snow ~ 9:15p, continuing at 11:10p, ending ~ 1:30a (.32/5.0)
2/12/2020 7:00 AM 0.00 0.0 M M M 36º / 12º
2/13/2020 7:00 AM 0.18 2.6 M M M 42º / 21º Flurries ~ 1:50p becoming lt snow ~ 2:05p, increasing to lt/mod snow ~ 2:30p, diminishing slowly to lt snow/fluries~ 3:05p ending ~ 3:10p(.05/.7) Lt snow/Flurries ~ 3:30-9:30p(.13/1.9)
2/14/2020 7:00 AM 0.00 0.0 M M M 35º / 13º
2/15/2020 7:00 AM 0.00 0.0 M M M 54º / 25º
2/16/2020 7:00 AM 0.00 0.0 M M M 44º / 24º
2/17/2020 7:00 AM 0.00 0.0 M M M 47º / 28º
2/18/2020 7:00 AM 0.04 0.3 M M M 46º / 20º Lt Snow sometime between 7:30-11:00p (.04/.3)
2/19/2020 7:00 AM 0.00 0.0 M M M 36º / 21º
2/20/2020 7:00 AM 0.14 3.6 M M M 28º / 7º Flurries ~ 8:45a, w occ lt snow showers ~ 11:50a-7:30p (.14/3.6)
2/21/2020 7:00 AM 0.00 0.0 M M M 40º / 14º
2/22/2020 7:00 AM 0.00 0.0 M M M 51º / 27º
2/23/2020 7:00 AM 0.00 0.0 M M M 55º / 31º
2/24/2020 7:00 AM 0.01 T M M M 46º / 28º Occ Snow flurries/showers ~ 10:20a-12:25p (.01/T)
2/25/2020 7:00 AM 0.00 0.0 M M M 42º / 25º
2/26/2020 7:00 AM 0.00 0.0 M M M 31º / 13º
2/27/2020 7:00 AM 0.00 0.0 M M M 44º / 17º
2/28/2020 7:00 AM 0.00 0.0 M M M 59º / 34º
2/29/2020 7:00 AM 0.00 0.0 M M M 62º / 36º
3/1/2020 7:00 AM 0.00 0.0 M M M 45º / 28º
3/2/2020 7:00 AM 0.32 4.0 M M M 48º / 28º (.32/4.0)
3/3/2020 7:00 AM 0.00 0.0 M M M 48º / 27º
3/4/2020 7:00 AM 0.00 0.0 M M M 60º / 27º
3/5/2020 7:00 AM 0.00 0.0 M M M 63º / 32º
3/6/2020 7:00 AM 0.00 0.0 M M M 55º / 29º
3/7/2020 7:00 AM 0.00 0.0 M M M 68º / 37º
3/8/2020 7:00 AM 0.00 0.0 M M M 70º / 38º
3/9/2020 7:00 AM 0.20 0.0 M M M 70 / 39º Occ lt rain/sprinkles ~ 9:30p-4:00a (.2)
3/10/2020 7:00 AM 0.00 0.0 M M M 62º / 34º
3/11/2020 7:00 AM 0.00 0.0 M M M 62º / 33º
3/12/2020 7:00 AM 0.00 0.0 M M M 67º / 40º
3/13/2020 7:00 AM T 0.0 M 0.0 M 48º / 33º A few sprinkles ~ 1:30p (T)
3/14/2020 7:00 AM 0.12 1.5 M M M 40º / 32º Lt snow shower ~ 9:50-11:45a (.01/T) Snow shower ~ 5:30-7:25p (.12/1.5)
3/15/2020 7:00 AM 0.00 0.0 M M M 42º / 33º
3/16/2020 7:00 AM 0.00 0.0 M M M 53º / 30º
3/17/2020 7:00 AM 0.03 0.0 M M M 56º / 37º Lt rain/drizzle after 3am (.03)
3/18/2020 7:00 AM 0.01 0.0 M M M 55º / 31º A bit of lt rain after 8:00a (.01)
3/19/2020 7:00 AM 0.18 0.0 M M M 63º / 34º Lt rain began after 2:00a, continuing at 7:00a (.18)
3/20/2020 7:00 AM 1.60 7.2 M M M 35º / 24º Lt rain changing to lt/mod snow ~ 8:45a (1.11/3.3, 1:00p), (precip incl rain from 7:00-8:45a) Lt/mod snow thru 11:00p (.41/3.4) Occ flurries/lt snow ~ 11:00-early morning Flurries/lt snow (.08/.5)
3/21/2020 7:00 AM 0.03 0.2 M M M 30º / 22º Occ am lt flurries (T/T) Brief lt snow shower ~ 1:45-2:40p (.03/.2)
3/22/2020 7:00 AM 0.00 0.0 M M M 49º / 29º
3/23/2020 7:00 AM 0.00 0.0 M M M 55º / 30º
3/24/2020 7:00 AM T 0.0 M M M 57º / 34º Spritz of lt rain ~ 2:15p (T)
3/25/2020 7:00 AM 0.00 0.0 M M M 63º / 40º
3/26/2020 7:00 AM 0.00 0.0 M M M 66º / 34º
3/27/2020 7:00 AM 0.00 0.0 M M M 53º / 34º
3/28/2020 7:00 AM 0.09 1.0 M M M 41º / 30º Occ sprinkles/lt rain ~ 4:15p becoming occ lt rain/snow mix ~ 4:35p changing to wet snow ~ 6:45p. Lt wet snow at 10:30p (.08 (incl lt rain/rain snow mix)/.9) Lt wet snow until after midnight (.01/.1)
3/29/2020 7:00 AM 0.00 0.0 M M M 51º / 31º
3/30/2020 7:00 AM 0.00 0.0 M M M 57º / 34º
3/31/2020 7:00 AM 0.00 0.0 M M M 60º / 31º
4/1/2020 7:00 AM 0.00 0.0 M M M 69º / 36º
4/2/2020 7:00 AM 0.06 0.0 M M M 71º / 30º Lt freezing drizzle after midnight continuing at 7:00a (.06)
4/3/2020 7:00 AM 0.10 0.8 M M M 31º / 22º Lt freezing drizzle (7:00a) becoming mixed with occ snow pellets ~ 10:45a, changing to lt snow ~2:05p (.03/T) Occ lt snow thru midnight (.06/.7) Flurries/lt snow after midnight(.01/.1)
4/4/2020 7:00 AM 0.00 0.0 M M M 44º / 27º
4/5/2020 7:00 AM 0.00 0.0 M M M 60º / 33º
4/6/2020 7:00 AM 0.00 0.0 M M M 69º / 34º
4/7/2020 7:00 AM 0.00 0.0 M M M 73º / 42º
4/8/2020 7:00 AM 0.00 0.0 M M M 72º / 40º
4/9/2020 7:00 AM 0.00 0.0 M M M 71º / 36º
4/10/2020 7:00 AM 0.00 0.0 M M M 60º / 38º
4/11/2020 7:00 AM 0.00 0.0 M M M 74º / 40º
4/12/2020 7:00 AM 0.37 5.7 0.37 M M 71º / 26º Lt snow ~ 3:00a, becoming mod/lt snow ~ 3:30-7:00a (.37/5.7)
4/13/2020 7:00 AM 0.49 9.5 0.49 M M 35º / 18º Lt/mod snow 7:00a diminishing to lt flurries by 9:00a, ending by 10:00a (.04/.9) Lt flurries ~ 10:25-11:45a(.01/.3) Occ flurries ~ 1:00-3:05p, becoming lt snow thru the night (7:00a) (.44/8.3)
4/14/2020 7:00 AM 0.09 0.9 M M M 33º / 18º Lt snow at 7:00a diminishing to flurries ~ 7:40-8:25a. Occ flurries/ltsnow showers ~ 9:15a-4:45p (.09/.9)
4/15/2020 7:00 AM 0.00 0.0 M M M 48º / 26º
4/16/2020 7:00 AM 1.15 10.5 1.15 M M 48º / 26º Boulder record Low 10º Rain began 7:45p, quickly changing to snow after 8:00p, Mod/Lt snow thru the night, continuing at 7:00a (1.15/10.5)
4/17/2020 7:00 AM 0.45 5.2 M M M 34º / 14º Lt/mod snow at 7:00-10:00a Periods of Lt/mod snow ~ 11:00a-7:50p (.45/5.2)
4/18/2020 7:00 AM 0.00 0.0 M M M 43º / 18º
4/19/2020 7:00 AM 0.00 0.0 M M M 56º / 37º
4/20/2020 7:00 AM 0.00 0.0 M M M 58º / 37º
4/21/2020 7:00 AM 0.00 0.0 M M M 66º / 38º
4/22/2020 7:00 AM 0.00 0.0 M M M 68º / 44º
4/23/2020 7:00 AM 0.01 0.0 M M M 67º / 41º Sprinkles/lt rain shower ~ 1:15-2:50p (.01)
4/24/2020 7:00 AM 0.01 0.0 M M M 67º / 42º Occ overnight showers/sprinkles between 10:30p-3:00a (.01)
4/25/2020 7:00 AM 0.01 T M M M 61º / 42º Lt shower mixed w wet snow ~ 10:45-10:55a (.01/T) Occ sprinkles ~ 11:25a-12:45p (T)
4/26/2020 7:00 AM 0.00 0.0 M M M 67º / 41º
4/27/2020 7:00 AM 0.00 0.0 M M M 72º / 43º
4/28/2020 7:00 AM 0.00 0.0 M M M 78º / 46º
4/29/2020 7:00 AM 0.00 0.0 M M M 73º / 40º
4/30/2020 7:00 AM 0.00 0.0 M M M 73º / 47º
5/1/2020 7:00 AM 0.00 0.0 M M M 81º / 51º
5/2/2020 7:00 AM 0.00 0.0 M M M 82º / 51º
5/3/2020 7:00 AM 0.18 0.0 M M M 64º / 48º Occ showers ~ 6:00-11:00p (.18)
5/4/2020 7:00 AM 0.06 0.0 M M M 72º / 47º Occ lt rain showers after 9:00p thru ~ 6:30a (.06)
5/5/2020 7:00 AM 0.00 0.0 M M M 69º / 37º
5/6/2020 7:00 AM 0.00 0.0 M M M 73º / 41º
5/7/2020 7:00 AM 0.00 0.0 M M M 68º / 43º
5/8/2020 7:00 AM 0.02 0.0 M M M 74º / 38º Lt shower sometime between 1:00-4:45a (.02)
5/9/2020 7:00 AM 0.00 0.0 M M M 63º / 41º
5/10/2020 7:00 AM 0.00 0.0 M M M 64º / 41º
5/11/2020 7:00 AM 0.00 0.0 M M M 62º / 37º
5/12/2020 7:00 AM 0.13 T M M M 52º / 38º Lt rain/sprinkles ~ 10:50a (initially mixed w a few snowflakes) - 12:05p (.09/T) Lt rain ~ 12:40-2:45p (.03) Overnight shower sometime between midnight-4:00a (.01)
5/13/2020 7:00 AM 0.00 0.0 M M M 68º / 44º
5/14/2020 7:00 AM 0.00 0.0 M M M 79º / 54º
5/15/2020 7:00 AM 0.18 0.0 M M M 71º / 52º Ts ~ 2:10-2:40p (.14,hvy2:25-2:35p)) Occ sprinkles/lt rain ~ 6:45p-midnight (.04)
5/16/2020 7:00 AM 0.15 0.0 M M M 70º / 52º Occ sprinkles then Ts ~ 5:45-8:00p (.14) Shower after midnighr (.01)
5/17/2020 7:00 AM 0.00 0.0 M M M 71º / 45º
5/18/2020 7:00 AM 0.00 0.0 M M M 72º / 50º
5/19/2020 7:00 AM 0.00 0.0 M M M 82º / 52º
5/20/2020 7:00 AM 0.00 0.0 M M M 85º / 58º
5/21/2020 7:00 AM 0.00 0.0 M M M 87º / 50º
5/22/2020 7:00 AM 0.00 0.0 M M M 77º / 49º
5/23/2020 7:00 AM T 0.0 M M M 82º / 51º Some sprinkles ~ 6:20p (T)
5/24/2020 7:00 AM 0.00 0.0 M M M 78º / 52º
5/25/2020 7:00 AM 0.98 0.0 M M M 58º / 42º Rain/Lt rain ~ 10:15a-6:30p (.97) Overnight lt shower(.01)
5/26/2020 7:00 AM 0.00 0.0 M M M 64º / 41º
5/27/2020 7:00 AM 0.00 0.0 M M M 76º / 49º
5/28/2020 7:00 AM 0.14 0.0 M M M 81º / 53º Brief sprinkles/lt shower ~ 2:15p (.01) Late evening shower before 10;30p (.13)
5/29/2020 7:00 AM 0.00 0.0 M M M 73º / 53º
5/30/2020 7:00 AM 0.00 0.0 M M M 82º / 58º
5/31/2020 7:00 AM 0.04 0.0 M M M 82º / 56º Ts ~ 8:00-9:40p (.04)
6/1/2020 7:00 AM 0.02 0.0 M M M 85º / 57º Rain shower ~ 4:30p (.02)
6/2/2020 7:00 AM T 0.0 M M M 89º / 63º Sprinkles ~ 12:30p A few more afternoon sprinkles (T)
6/3/2020 7:00 AM T 0.0 M M M 87º / 57º Afternoon sprinkles ~ 4:15p (T)
6/4/2020 7:00 AM 0.00 0.0 M M M 89º / 60º
6/5/2020 7:00 AM 0.02 0.0 M M M 88º / 60º Rain shower ~ 2:30p w strong gusty winds (.02)
6/6/2020 7:00 AM 0.00 0.0 M M M 91º / 65º
6/7/2020 7:00 AM 0.06 0.0 M M M 85º / 50º Lt shower ~ 9:15-9:25a (.01) Ts ~ 3:15 - 3:45p (.05)
6/8/2020 7:00 AM 0.00 0.0 M M M 85º / 50º
6/9/2020 7:00 AM 0.29 0.0 M M M 77º / 45º Sprinkles ~ 6:30p (T) Lt rain began before 10:00p, w sprinkles at 7:00a (.29)
6/10/2020 7:00 AM T 0.0 M M M 69º / 40º Sprinkles at 7:00a(T)
6/11/2020 7:00 AM 0.00 0.0 M M M
6/12/2020 7:00 AM 0.00 0.0 M M M 82º / 53º
6/13/2020 7:00 AM 0.00 0.0 M M M 89º / 57º
6/14/2020 7:00 AM 0.02 0.0 M M M 81º / 63º Sprinkles ~ 1:15p (T). ts w sprinkles and brief lt shower ~ 4:20-4:25p (.02)
6/15/2020 7:00 AM 0.00 0.0 M M M 90º / 65º
6/16/2020 7:00 AM 0.00 0.0 M M M 92º / 58º
6/17/2020 7:00 AM 0.00 0.0 M M M 92º / 57º
6/18/2020 7:00 AM 0.00 0.0 M M M 92º / 54º
6/19/2020 7:00 AM 0.88 0.0 M M M 70º / 53º Occ sprinkles ~1:15-1:50p (T) Occ showers ~ 6:15p into the overnight (.88)
6/20/2020 7:00 AM 0.21 0.0 M M M 67º / 48º Sprinkles ~ 10:40a (T). Ts w mod/lt rain ~ 2:00 ~ 3:00p (.21)
6/21/2020 7:00 AM 0.00 0.0 M M M 85º / 60º
6/22/2020 7:00 AM 0.19 0.0 M M M 80º / 55º Ts between 5-6:00p (.19)
6/23/2020 7:00 AM 0.00 0.0 M M M 81º / 55º
6/24/2020 7:00 AM 0.00 0.0 M M M 83º / 63º
6/25/2020 7:00 AM 0.00 0.0 M M M 89º / 57º
6/26/2020 7:00 AM 0.00 0.0 M M M
6/27/2020 7:00 AM 0.22 0.0 M M M 80º / 57º Ts ~ 3:30-4:25p (.22)
6/28/2020 7:00 AM 0.00 0.0 M M M 90º / 59º
6/29/2020 7:00 AM T 0.0 M M M 85º / 57º Sprinkles w thunder ~ 3:15p (T)
6/30/2020 7:00 AM 0.00 0.0 M M M 88º / 59º
7/1/2020 7:00 AM 0.08 0.0 M M M 83º / 55º Brief rain shower ~ 9:40-10:00a (.08)
7/2/2020 7:00 AM 0.00 0.0 M M M 88º / 57º
7/3/2020 7:00 AM 0.00 0.0 M M M 93º / 62º
7/4/2020 7:00 AM 0.00 0.0 M M M 86º / 62º
7/5/2020 7:00 AM 0.00 0.0 M M M 89º / 56º
7/6/2020 7:00 AM T 0.0 M M M 90º / 59º Sprinkles/lt rain shower ~ 4:15p (T)
7/7/2020 7:00 AM 0.00 0.0 M M M 93º / 61º
7/8/2020 7:00 AM T 0.0 M M M 92º / 57º A few PM sprinkles (T)
7/9/2020 7:00 AM 0.00 0.0 M M M 96º / 59º
7/10/2020 7:00 AM 0.00 0.0 M M M 91º / 61º
7/11/2020 7:00 AM 0.00 0.0 M M M 97º / 63º
7/12/2020 7:00 AM 0.00 0.0 M M M 92º / 60º
7/13/2020 7:00 AM 0.00 0.0 M M M 86º / 69º
7/14/2020 7:00 AM T 0.0 M M M 96º / 66º Some mid-day sprinkles (T)
7/15/2020 7:00 AM 0.02 0.0 M M M 77º / 59º Occ sprinkles/lt showers with thunder after 2:00p (.02)
7/16/2020 7:00 AM 0.00 0.0 M M M 80º / 57º
7/17/2020 7:00 AM 0.00 0.0 M M M 91º / 65º
7/18/2020 7:00 AM 0.00 0.0 M M M 93º / 69º
7/19/2020 7:00 AM T 0.0 M M M 95º / 63º
7/20/2020 7:00 AM 0.00 0.0 M M M 88º / 63º
7/21/2020 7:00 AM 0.00 0.0 M M M 91º / 59º
7/22/2020 7:00 AM 0.00 0.0 M M M 86º / 59º
7/23/2020 7:00 AM 0.01 0.0 M M M 88º / 64º Some sprinkles ~ 5:30p (.01)
7/24/2020 7:00 AM 0.00 0.0 M M M 90º / 68º
7/25/2020 7:00 AM 0.24 0.0 M M M 84º / 62º Sprinkles ~ 1:37p, becoming lt rain ~ 1:53p. Rain shower after 3:15p thru 5:15p (.14) Evening rain shower (.10)
7/26/2020 7:00 AM 0.07 0.0 M M M 80º / 63º Occ sprinkles ~ 12:30-1:20p (T) Sprinkles/lt rain ~ 3:00-4:45p (.07)
7/27/2020 7:00 AM 0.00 0.0 M M M 79º / 58º Occ sprinkles/lt rain ~ 3:05-4:00p (.02) a few sprinkles ~ 5:15p (T)
7/28/2020 7:00 AM 0.00 0.0 M M M 87º / 62º
7/29/2020 7:00 AM 0.10 0.0 M M M 82º / 61º Shower w thunder 2:05-2:55p (mod ~ 2:20-2:35p) (.10)
7/30/2020 7:00 AM 0.00 0.0 M M M 92º / 58º
7/31/2020 7:00 AM T 0.0 M M M 78º / 57º Brief sprinkles/lt shower ~ 4:05-4:20p (T)
8/1/2020 7:00 AM T 0.0 M M M 86º / 56º Brief lt shower w thunder ~ 4:10-4:15p (T)
8/2/2020 7:00 AM T 0.0 M M M 86º / 59º Brief lt shower ~ 4:55p (T)
8/3/2020 7:00 AM T 0.0 M M M 82º / 57º Some sprinkles ~ 2:25p (T)
8/4/2020 7:00 AM T 0.0 M M M 82º / 60º Sprinkles ~ 1;25p (T) More sprinkles ~ 3:10p (T)
8/5/2020 7:00 AM 0.03 0.0 M M M 89º / 61º Lt shower ~ 4:42-4:55p (.03)
8/6/2020 7:00 AM 0.09 0.0 M M M 88º / 60º Ts w shower ~ 3:35-4:55p (.09)
8/7/2020 7:00 AM T 0.0 M M M 89º / 56º Some sprinkles ~ 12:30p (T) Sprinkles ~ 4:20-4:30p (T)
8/8/2020 7:00 AM 0.00 0.0 M M M 95º / 63º
8/9/2020 7:00 AM 0.00 0.0 M M M 95º / 64º
8/10/2020 7:00 AM 0.00 0.0 M M M 96º / 62º
8/11/2020 7:00 AM 0.00 0.0 M M M 85º / 57º
8/12/2020 7:00 AM 0.00 0.0 M M M 90º / 57º
8/13/2020 7:00 AM T 0.0 M M M 92º / 60º Wind-blown sprinkles ~ 3:25p (T)
8/14/2020 7:00 AM 0.00 0.0 M M M 92º / 61º
8/15/2020 7:00 AM 0.00 0.0 M M M 89º / 57º 2nd day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and respiratory issues. CAREFUL OUT THERE. THIS IS AS BAD AS I'VE SEEN IT IN THE 40 YEARS I HAVE LIVED IN BOULDER.
8/16/2020 7:00 AM 0.00 0.0 M M M 90º / 59º 3rd day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires. CAREFUL OUT THERE! THIS IS AS BAD AS I'VE SEEN IT IN THE 40 YEARS I HAVE LIVED IN BOULDER
8/19/2020 7:00 AM 0.00 0.0 M M M 93º / 62º 5th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires. CAREFUL OUT THERE! THIS IS AS BAD AS I'VE SEEN IT IN THE 40 YEARS I HAVE LIVED IN BOULDER
8/20/2020 7:00 AM 0.00 0.0 M M M 90º / 59º 7th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/21/2020 7:00 AM 0.13 0.0 M M M 87º / 58º Brief lt ts w sprinkles/lt rain shower ~ 3:10-3:20p (T) Lt Ts w lt/mod rain ~ 8:55-9:10p (.13) 8th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/22/2020 7:00 AM 0.00 0.0 M M M 91º / 60º 9th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/23/2020 7:00 AM 0.00 0.0 M M M 94º / 63º 10th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/24/2020 7:00 AM 0.00 0.0 M M M 91º / 64º 11th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/25/2020 7:00 AM 0.00 0.0 M M M 92º / 63º 11th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/26/2020 7:00 AM 0.00 0.0 M M M 95º / 63º Boulder record high 97º 12th day of Heavy smoke (smell), ozone and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
8/27/2020 7:00 AM T 0.0 M M M 89º / 60º Sprinkles/lt shower ~ 4:20p (T) 13th day: ozone alert remains in effect but general fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires has been lifted.
8/28/2020 7:00 AM 0.20 0.0 M M M 93º / 61º Evening rain showers. 0.20 All air quality alerts have been cancelled. Yea!
8/29/2020 7:00 AM 0.05 0.0 M M M 79º / 56º Occ sprinkles/lt showers ~ 3:30p thru the evening and overnight. (.05)
8/30/2020 7:00 AM 0.01 0.0 M M M 77º / 59º Morning shower/sprinkles ending ~ 9:45a (.01)
9/1/2020 7:00 AM 0.09 0.0 M M M 71º / 50º Brief shower ~ 3:15-3:45p (.005+) Occ lt showers/sprinkles ~ 5:30p into the early morning hours (.08)
9/2/2020 7:00 AM 0.00 0.0 M M M 81º / 53º
9/3/2020 7:00 AM 0.00 0.0 M M M 88º / 53º
9/4/2020 7:00 AM 0.00 0.0 M M M 84º / 52º
9/5/2020 7:00 AM 0.00 0.0 M M M 89º / 57º Ozone alert is in effect, causing breathing irritation and other respiratory issues, due to nearby forest fires.
9/6/2020 7:00 AM 0.00 0.0 M M M 97º / 61º Boulder record high 99º
9/7/2020 7:00 AM 0.00 0.0 M M M 94º / 54º Boulder record high 99º Heavy smoke (and smell) and fine particulates causing breathing irritation and other respiratory issues due to nearby forest fires.
9/8/2020 7:00 AM 0.27 T M M M 89º / 38º Rain showers overnight, w rain/snow mix at 7:00a (.27/T)
9/9/2020 7:00 AM 1.04 3.6 M M M 39º / 34º Boulder record low 32º Lt rain occ mixed w lt snow 7:00a-1:15p, (1:30p: .22/T), becoming periods of lt snow. Mostly occ flurries/lt snow overnight continuing at 7:00a (.82/3.6)
9/10/2020 7:00 AM 0.09 T M M M 45º / 35º Occ flurries/showers 7:00a-2:00p. Overnight lt showers (.09/T)
9/11/2020 7:00 AM 0.00 0.0 M M M 55º / 45º
9/12/2020 7:00 AM 0.00 0.0 M M M 70º / 44º
9/13/2020 7:00 AM 0.00 0.0 M M M 80º / 47º
9/14/2020 7:00 AM 0.00 0.0 M M M 82º / 49º
9/15/2020 7:00 AM 0.00 0.0 M M M 86º / 51º
9/16/2020 7:00 AM 0.00 0.0 M M M 86º / 50º
9/17/2020 7:00 AM 0.00 0.0 M M M 75º / 47º Heavy smoke (and smell) and fine particulates and high PM ozone levels causing breathing irritation and other respiratory issues due to West Coast and Colorado forest fires.
9/19/2020 7:00 AM 0.00 0.0 M M M 77º / 51º Heavy smoke (and smell) and fine particulates levels causing breathing irritation and other respiratory issues due to West Coast and Colorado forest fires.
9/20/2020 7:00 AM 0.00 0.0 M M M 84º / 54º
9/21/2020 7:00 AM T 0.0 M M M 80º / 51º Some sprinkles ~ 1:55p (T)
9/22/2020 7:00 AM 0.00 0.0 M M M 85º / 52º
9/23/2020 7:00 AM 0.00 0.0 M M M 85º / 52º
9/24/2020 7:00 AM 0.00 0.0 M M M 89º / 52º
9/25/2020 7:00 AM 0.00 0.0 M M M 86º / 56º



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground