Station Overview Station Location
Station Number CO-BO-8 Latitude 39.9925
Station Name Lafayette 0.4 WSW Longitude -105.1057
County Boulder Elevation (ft) 5285



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 1.12 1.46 31 1.46 31 0.00 0 0 9 2 17.7 7 7
Nov 19 0.95 2.10 30 2.10 30 0.00 0 0 7 2 22.5 6 14
Dec 19 0.70 0.34 31 0.34 31 0.00 0 0 3 3 4.1 3 21
Jan 20 0.49 0.00 30 0.00 30 0.00 0 0 0 1 0.0 0 1
Feb 20 0.47 0.32 19 0.32 19 0.00 0 0 5 1 4.9 4 16
March 20 1.56 2.05 31 2.05 31 0.00 0 0 6 7 11.9 3 6
April 20 2.01 2.17 30 2.17 30 0.00 0 0 8 4 25.6 6 8
May 20 2.25 1.39 31 1.39 31 0.00 0 0 8 3 0.0 0 0
June 20 1.88 1.55 30 1.55 30 0.00 0 0 8 5 0.0 0 0
July 20 1.54 0.38 31 0.38 31 0.00 0 0 7 8 0.0 0 0
Aug 20 1.65 0.21 31 0.21 31 0.00 0 0 5 9 0.0 0 0
Sept 20 1.40 0.83 30 0.83 30 0.00 0 0 4 2 1.6 1 0
Water Year Totals: 16.02" 12.80" 355 days 12.80" 355 0.00" 0 days 0 70 days 47 days 88.3" 30 days 73 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 0.02
10/2/2019 0.10
10/3/2019 T
10/4/2019 0.00
10/5/2019 0.00
10/6/2019 0.00
10/7/2019 0.00
10/8/2019 0.00
10/9/2019 0.00
10/10/2019 0.08
10/11/2019 0.23
10/12/2019 0.00
10/13/2019 0.00
10/14/2019 0.00
10/15/2019 0.00
10/16/2019 0.00
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 0.29
10/25/2019 0.00
10/26/2019 0.00
10/27/2019 0.05
10/28/2019 0.34
10/29/2019 0.15
10/30/2019 0.20
10/31/2019 T
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 0.05
11/8/2019 0.00
11/9/2019 0.00
11/10/2019 0.00
11/11/2019 0.05
11/12/2019 T
11/13/2019 0.00
11/14/2019 0.00
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 0.27
11/22/2019 0.17
11/23/2019 T
11/24/2019 0.00
11/25/2019 0.00
11/26/2019 1.20
11/27/2019 0.26
11/28/2019 0.00
11/29/2019 0.00
11/30/2019 0.10
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 0.12
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 0.00
12/15/2019 0.01
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 0.00
12/28/2019 0.21
12/29/2019 T
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 0.00
1/16/2020 0.00
1/17/2020 0.00
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 T
1/31/2020
2/1/2020
2/2/2020
2/3/2020
2/4/2020
2/5/2020
2/6/2020
2/7/2020
2/8/2020
2/9/2020
2/10/2020
2/11/2020 0.15
2/12/2020 0.00
2/13/2020 0.09
2/14/2020 0.00
2/15/2020 0.00
2/16/2020 0.00
2/17/2020 0.00
2/18/2020 0.01
2/19/2020 0.00
2/20/2020 0.05
2/21/2020 0.00
2/22/2020 0.00
2/23/2020 0.00
2/24/2020 0.02
2/25/2020 T
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 0.26
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 0.13
3/10/2020 0.00
3/11/2020 0.00
3/12/2020 0.00
3/13/2020 0.00
3/14/2020 0.03
3/15/2020 T
3/16/2020 0.00
3/17/2020 T
3/18/2020 T
3/19/2020 0.20
3/20/2020 1.21
3/21/2020 T
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 T
3/28/2020 0.22
3/29/2020 0.00
3/30/2020 0.00
3/31/2020 T
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020 0.03
4/3/2020 0.06
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 0.29
4/13/2020 0.29
4/14/2020 0.09
4/15/2020 0.00
4/16/2020 1.07
4/17/2020 0.23
4/18/2020 0.00
4/19/2020 T
4/20/2020 0.00
4/21/2020 0.00
4/22/2020 0.00
4/23/2020 T
4/24/2020 0.11
4/25/2020 T
4/26/2020 T
4/27/2020 0.00
4/28/2020 0.00
4/29/2020 0.00
4/30/2020 0.00
5/1/2020 T
5/2/2020 0.00
5/3/2020 0.23
5/4/2020 0.06
5/5/2020 0.00
5/6/2020 0.00
5/7/2020 0.00
5/8/2020 0.00
5/9/2020 0.00
5/10/2020 0.00
5/11/2020 0.00
5/12/2020 0.12
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.07
5/16/2020 0.13
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 0.00
5/24/2020 T
5/25/2020 0.67
5/26/2020 0.00
5/27/2020 0.00
5/28/2020 0.01
5/29/2020 T
5/30/2020 0.00
5/31/2020 0.10
6/1/2020 T
6/2/2020 0.00
6/3/2020 T
6/4/2020 0.00
6/5/2020 T
6/6/2020 0.00
6/7/2020 0.01
6/8/2020 0.00
6/9/2020 0.60
6/10/2020 0.01
6/11/2020 0.00
6/12/2020 0.00
6/13/2020 0.00
6/14/2020 T
6/15/2020 0.00
6/16/2020 0.00
6/17/2020 0.00
6/18/2020 0.00
6/19/2020 0.57
6/20/2020 0.06
6/21/2020 0.00
6/22/2020 0.04
6/23/2020 0.00
6/24/2020 0.00
6/25/2020 0.02
6/26/2020 0.00
6/27/2020 0.24
6/28/2020 0.00
6/29/2020 T
6/30/2020 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.03
7/2/2020 0.00
7/3/2020 0.00
7/4/2020 0.00
7/5/2020 0.00
7/6/2020 0.00
7/7/2020 T
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 T
7/14/2020 0.01
7/15/2020 0.04
7/16/2020 0.00
7/17/2020 0.00
7/18/2020 0.00
7/19/2020 T
7/20/2020 T
7/21/2020 0.00
7/22/2020 0.00
7/23/2020 0.02
7/24/2020 0.00
7/25/2020 0.12
7/26/2020 0.14
7/27/2020 T
7/28/2020 0.00
7/29/2020 0.02
7/30/2020 T
7/31/2020 T
8/1/2020 0.01
8/2/2020 T
8/3/2020 T
8/4/2020 T
8/5/2020 T
8/6/2020 T
8/7/2020 T
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.00
8/11/2020 T
8/12/2020 0.00
8/13/2020 0.00
8/14/2020 0.00
8/15/2020 0.00
8/16/2020 0.00
8/17/2020 0.00
8/18/2020 0.00
8/19/2020 0.00
8/20/2020 0.00
8/21/2020 0.09
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 0.05
8/29/2020 0.04
8/30/2020 0.02
8/31/2020 T
9/1/2020 0.08
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 0.30
9/9/2020 0.44
9/10/2020 T
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 0.00
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 0.00
9/27/2020 0.00
9/28/2020 0.01
9/29/2020 0.00
9/30/2020 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2019 7:00 AM 0.02 0.0 M 0.0 M Sunny day, then ovc after sunset. Ground wet by 0515. Weak surge passed ca 06L w/brief RW-, then L- continues.
10/2/2019 7:00 AM 0.10 0.0 M 0.0 M LW-RW- and ovc all day and night. Aftn max 50F.
10/3/2019 7:00 AM T 0.0 M 0.0 M drizzle ended early, sun by noon
10/4/2019 7:00 AM 0.00 0.0 M 0.0 M
10/5/2019 7:00 AM 0.00 0.0 M 0.0 M
10/6/2019 7:00 AM 0.00 0.0 M 0.0 M
10/7/2019 7:00 AM 0.00 0.0 M 0.0 M
10/8/2019 7:00 AM 0.00 0.0 M 0.0 M
10/9/2019 7:00 AM 0.00 0.0 M 0.0 M
10/10/2019 7:15 AM 0.08 0.5 M 0.5 M Strong FROPA 1653L, 20F drop from 78F max within an hour. Drizzle began mid-evening with temp 40F, switched to light rain late eve, ended around midnight with .03" and 30F. Then SG- began ca 0330L, changed to snow shortly before sunrise. Steady light snow at obs time, 23F.
10/11/2019 7:00 AM 0.23 3.1 M 2.5 M snow ended early aftn, with some spots of sun mid-aftn, then light snow late aftn, then clear by evening
10/12/2019 7:00 AM 0.00 0.0 M T M
10/13/2019 7:00 AM 0.00 0.0 M 0.0 M
10/14/2019 7:00 AM 0.00 0.0 M 0.0 M
10/15/2019 7:00 AM 0.00 0.0 M 0.0 M
10/16/2019 7:00 AM 0.00 0.0 M 0.0 M
10/17/2019 7:00 AM 0.00 0.0 M 0.0 M
10/18/2019 7:00 AM 0.00 0.0 M 0.0 M Warm day (77F) and mild night - temp rose from 49F to 57 before midnight, with 59 at 0330. Dropped to am low of 50F at sunrise.
10/19/2019 7:00 AM 0.00 0.0 M 0.0 M
10/20/2019 7:00 AM 0.00 0.0 M 0.0 M
10/21/2019 7:00 AM 0.00 0.0 M 0.0 M
10/22/2019 7:00 AM 0.00 0.0 M 0.0 M
10/23/2019 7:00 AM 0.00 0.0 M 0.0 M
10/24/2019 7:00 AM 0.29 3.0 M 2.5 M Some very light rain began early aftn with east winds. More light rain late aftn, with very light snow by sunset. No accum until mid-eve, with 0.8" by 22L, SE ca 0330 then quickly cleared shortly before sunrise.
10/25/2019 7:00 AM 0.00 0.0 M T M
10/26/2019 7:00 AM 0.00 0.0 M 0.0 M
10/27/2019 7:00 AM 0.05 0.2 M T M Warm & windy aftn (74F max), then WSFT/FROPA 1800, temp to 48 in an hour. ZL- shortly after midnight until ca 06L changed to SP- then S-. Precip did not freeze on pavement.
10/28/2019 7:30 AM 0.34 5.7 M 5.0 M Light snow more or less all day & night. 0.8"/.02" 15L, +2.1"/.09" 2130, +2.8"/.23" at obs time.
10/29/2019 8:00 AM 0.15 2.5 M 5.5 M Sky cleared mid-day, then became overcast again near midnight. S- B ca 0430, based on obs & radar.
10/30/2019 7:00 AM 0.20 2.7 M 6.0 M Daytime temps mid-teens. Light snow stopped about three hours before sunrise. Min 3F.
10/31/2019 7:00 AM T T M 5.0 M a brief mid-morning snow shower, then sunny
11/1/2019 7:00 AM 0.00 0.0 M 3.0 M
11/2/2019 7:00 AM 0.00 0.0 M 2.5 M
11/3/2019 7:00 AM 0.00 0.0 M 1.5 M
11/4/2019 7:00 AM 0.00 0.0 M 0.5 M
11/5/2019 7:00 AM 0.00 0.0 M T M
11/6/2019 7:00 AM 0.00 0.0 M 0.0 M
11/7/2019 7:00 AM 0.05 0.0 M 0.0 M Sunny early with 53F max, FROPA ca 11L, ovc by 1230, temp mid 30s 1330. L- B ca1515, ZL- by 19L, E ca midnight. No ice accum on pavement. Remained ovc at obs time.
11/8/2019 7:00 AM 0.00 0.0 M 0.0 M
11/9/2019 7:00 AM 0.00 0.0 M 0.0 M
11/10/2019 7:00 AM 0.00 0.0 M 0.0 M
11/11/2019 7:00 AM 0.05 1.4 M 1.5 M After a 70F high noon-ish, clouds increased aftn (spectacular sunset). Still 50F at 19L, 36 an hour later. L- began late eve, dipped below freezing by 2230. ZL- changed to S- around 0230. Some patches of blue & SE shortly after obs time.
11/12/2019 7:00 AM T T M 0.5 M S- ended before mid-morning, partly cloudy until mid-day, then sunny & chilly (26F max)
11/13/2019 7:00 AM 0.00 0.0 M 0.0 M
11/14/2019 7:00 AM 0.00 0.0 M 0.0 M
11/15/2019 7:00 AM 0.00 0.0 M 0.0 M
11/16/2019 7:00 AM 0.00 0.0 M 0.0 M
11/17/2019 7:00 AM 0.00 0.0 M 0.0 M
11/18/2019 7:00 AM 0.00 0.0 M 0.0 M wind picked up evening, temp rose from mid-40s to low 50s, where it stayed all night
11/19/2019 7:00 AM 0.00 0.0 M 0.0 M
11/20/2019 7:00 AM 0.00 0.0 M 0.0 M
11/21/2019 7:00 AM 0.27 0.9 M 1.0 M Light rain started mid-afternoon, mixed with snow, then all snow by 1615, with .08" in rain. Snow mostly ended around 1845. Some ZL- during night & after sunrise.
11/22/2019 7:00 AM 0.17 1.9 M 2.5 M light snow 1300-1430 (0.3"), then 2000ff, no accum after 0600
11/23/2019 7:00 AM T T M 2.0 M
11/24/2019 7:00 AM 0.00 0.0 M T M
11/25/2019 7:00 AM 0.00 0.0 M T M
11/26/2019 7:00 AM 1.20 14.1 M 11.5 M snow grains began early aftn, light snow mid-aftn, a lull early evening after about 1", then S-/S all night
11/27/2019 7:00 AM 0.26 3.7 M 12.0 M S- trailed off, becoming very light by mid-day and ending early aftn. Cleared around sunset. Max depth 14". Storm total 17.8"/1.46".
11/28/2019 7:00 AM 0.00 0.0 M 10.0 M sunny, 21F max
11/29/2019 7:00 AM 0.00 0.0 M 9.0 M sunny afternoon; 1/8-1/4F developed late evening, continued until before dawn
11/30/2019 7:00 AM 0.10 0.5 M 8.5 M some very light snow showers early aftn and early eve, then S-/SP- for about an hour mid-eve
12/1/2019 7:00 AM 0.00 0.0 M 8.0 M quite windy at times 11-16L
12/2/2019 7:00 AM 0.00 0.0 M 7.5 M
12/3/2019 7:00 AM 0.00 0.0 M 7.0 M some evening breezes with max 48F at 2145, then windy during night with temps in 40s
12/4/2019 7:00 AM 0.00 0.0 M 5.0 M sunny & 58F max -> lots of snow melt
12/5/2019 7:00 AM 0.00 0.0 M 4.5 M
12/6/2019 7:00 AM 0.12 0.1 M 4.5 M ovc until late evening, with drizzle/light rain/rain showers beginning mid morning and about an hour of light snow early evening
12/7/2019 7:00 AM 0.00 0.0 M 4.0 M
12/8/2019 7:00 AM 0.00 0.0 M 3.0 M gusty winds mid-day, sunny, high 59F
12/9/2019 7:00 AM 0.00 0.0 M 2.0 M
12/10/2019 7:00 AM T T M 1.5 M a very light mid-day snow shower
12/11/2019 7:00 AM 0.00 0.0 M 1.5 M
12/12/2019 7:00 AM 0.00 0.0 M 1.0 M
12/13/2019 7:00 AM 0.00 0.0 M 0.5 M
12/14/2019 7:00 AM 0.00 0.0 M 0.5 M
12/15/2019 7:00 AM 0.01 0.1 M 0.5 M light snow showers mid afternoon
12/16/2019 7:00 AM 0.00 0.0 M 0.5 M
12/17/2019 7:00 AM 0.00 0.0 M 0.5 M
12/18/2019 7:00 AM 0.00 0.0 M T M
12/19/2019 7:00 AM 0.00 0.0 M T M
12/20/2019 7:00 AM 0.00 0.0 M T M
12/21/2019 7:00 AM 0.00 0.0 M T M
12/22/2019 7:00 AM 0.00 0.0 M T M 62F max
12/23/2019 7:00 AM 0.00 0.0 M T M
12/24/2019 7:00 AM 0.00 0.0 M T M
12/25/2019 7:00 AM 0.00 0.0 M T M
12/26/2019 7:00 AM T 0.0 M T M RWU mid-day
12/27/2019 7:00 AM 0.00 0.0 M T M
12/28/2019 7:15 AM 0.21 3.9 M 4.0 M
12/29/2019 7:00 AM T T M 3.0 M SE ca 08L, then late morning SW-, but no accum. Ocnl windy aftn, with some blowing snow/drifting.
12/30/2019 7:00 AM 0.00 0.0 M 2.0 M
12/31/2019 7:00 AM 0.00 0.0 M 1.5 M
1/1/2020 7:00 AM 0.00 0.0 M 0.5 M
1/2/2020 7:00 AM 0.00 0.0 M T M
1/3/2020 7:00 AM 0.00 0.0 M T M
1/4/2020 7:00 AM 0.00 0.0 M T M
1/5/2020 7:00 AM 0.00 0.0 M T M Very mild for Jan (63F max), breezy aftn, then quite windy late eve until ca 03L.
1/6/2020 7:00 AM 0.00 0.0 M T M
1/7/2020 7:00 AM 0.00 0.0 M T M
1/8/2020 7:00 AM 0.00 0.0 M T M
1/9/2020 7:00 AM 0.00 0.0 M T M
1/10/2020 7:00 AM 0.00 0.0 M T M
1/11/2020 7:00 AM 0.00 0.0 M T M
1/12/2020 7:00 AM 0.00 0.0 M T M
1/13/2020 7:00 AM 0.00 0.0 M T M windy mid-day through afternoon
1/14/2020 7:00 AM 0.00 0.0 M T M
1/15/2020 7:00 AM 0.00 0.0 M T M
1/16/2020 7:00 AM 0.00 0.0 M T M
1/17/2020 7:00 AM 0.00 0.0 M T M
1/18/2020 7:00 AM 0.00 0.0 M T M
1/19/2020 7:00 AM 0.00 0.0 M T M
1/20/2020 7:00 AM 0.00 0.0 M T M
1/21/2020 7:00 AM 0.00 0.0 M T M
1/22/2020 7:00 AM 0.00 0.0 M T M
1/23/2020 7:00 AM 0.00 0.0 M T M
1/24/2020 7:00 AM 0.00 0.0 M T M
1/25/2020 7:00 AM 0.00 0.0 M T M
1/26/2020 7:00 AM 0.00 0.0 M T M
1/27/2020 7:00 AM 0.00 0.0 M T M
1/28/2020 7:00 AM 0.00 0.0 M T M
1/29/2020 7:00 AM 0.00 0.0 M 0.0 M Yesterday's 50F max finally took out the last of the ice remaining from our Thanksgiving-week storm. Neighbors across the street with different house/tree alignments still have large swaths of snow & ice.
1/30/2020 7:00 AM T 0.0 M 0.0 M a very light rain shower early evening - first precip of the month!
2/11/2020 7:00 AM 0.15 2.3 M 8.0 M S- briefly S late aftn to shortly after midnight; cleared ca 03L
2/12/2020 7:00 AM 0.00 0.0 M 7.0 M
2/13/2020 7:00 AM 0.09 1.3 M 8.0 M
2/14/2020 7:00 AM 0.00 0.0 M 7.5 M
2/15/2020 7:00 AM 0.00 0.0 M 5.5 M sunny 58F max -> considerable snowmelt/compaction
2/16/2020 7:00 AM 0.00 0.0 M 5.0 M
2/17/2020 7:00 AM 0.00 0.0 M 4.0 M
2/18/2020 7:00 AM 0.01 0.1 M 3.5 M very light snow mid to late evening
2/19/2020 7:00 AM 0.00 0.0 M 3.5 M
2/20/2020 7:00 AM 0.05 1.2 M 4.5 M snow grains early, then very light snow until mid-aftn, ended mid-evening & cleared during night
2/21/2020 7:00 AM 0.00 0.0 M 4.0 M
2/22/2020 7:00 AM 0.00 0.0 M 2.5 M
2/23/2020 7:00 AM 0.00 0.0 M 1.5 M
2/24/2020 7:00 AM 0.02 T M 1.0 M
2/25/2020 7:00 AM T T M 0.5 M brief SPW mid morning, then sunny
2/26/2020 7:00 AM 0.00 0.0 M 0.5 M overcast, chilly, & windy until late aftn; cleared by sunset
2/27/2020 7:00 AM 0.00 0.0 M T M
2/28/2020 7:00 AM 0.00 0.0 M T M
2/29/2020 7:00 AM 0.00 0.0 M T M
3/1/2020 7:00 AM 0.00 0.0 M T M
3/2/2020 7:00 AM 0.26 3.7 M 3.5 M brief SPW- at noon, then S-/ocnl S early afternoon through late evening, then again after midnight
3/3/2020 7:00 AM 0.00 0.0 M 0.5 M
3/4/2020 7:00 AM 0.00 0.0 M T M
3/5/2020 7:00 AM 0.00 0.0 M T M
3/6/2020 7:00 AM 0.00 0.0 M T M
3/7/2020 7:00 AM 0.00 0.0 M T M
3/8/2020 7:00 AM 0.00 0.0 M 0.0 M
3/9/2020 7:00 AM 0.13 0.0 M 0.0 M Sunny and mild until early aftn, then became cloudy with virga in area mid-aftn ff. Light rain evening.
3/10/2020 7:00 AM 0.00 0.0 M 0.0 M
3/11/2020 7:00 AM 0.00 0.0 M 0.0 M
3/12/2020 7:00 AM 0.00 0.0 M 0.0 M
3/13/2020 7:00 AM 0.00 0.0 M 0.0 M
3/14/2020 7:00 AM 0.03 T M 0.0 M ovc all day w/S- late morning to noon, and then R-S- late aftn to early evening
3/15/2020 7:00 AM T 0.0 M 0.0 M some sun mid aftn to early evening, then ovc with L- or RW- during the early am hours
3/16/2020 7:00 AM 0.00 0.0 M 0.0 M
3/17/2020 7:00 AM T 0.0 M 0.0 M Sunny late morning to late aftn, with incr high clds from W. Became ovc during eve. L- developed before sunrise.
3/18/2020 7:00 AM T 0.0 M 0.0 M L- ended by mid-morning, then mo sunny aftn
3/19/2020 7:00 AM 0.20 0.0 M 0.0 M sunny & mild, then became ovc late aftn; L-R- B near midnight, R- continues
3/20/2020 7:00 AM 1.21 7.3 M 7.0 M Snow mixed with rain at 0850, all snow 0910. S-/S much of day, S-/S-- after 1800, ended not long after midnight. Snow board had 1.7" heavy/wet topped with 4.6" of fluff this morning.
3/21/2020 7:00 AM T T M 5.5 M Overcast all day, with some very light snow mid afternoon. Off and on 1/8F an hour or two before dawn.
3/22/2020 7:00 AM 0.00 0.0 M 0.5 M
3/23/2020 7:00 AM 0.00 0.0 M T M
3/24/2020 7:00 AM T 0.0 M 0.0 M brief and very light early-evening shower
3/25/2020 7:00 AM 0.00 0.0 M 0.0 M
3/26/2020 7:00 AM 0.00 0.0 M 0.0 M
3/27/2020 7:00 AM T 0.0 M 0.0 M light drizzle at obs time
3/28/2020 7:00 AM 0.22 0.9 M 0.5 M After am L- (E by 0730), overcast with occasional thin sun breaks. R- 1600, R-S- 1750, S- 1800, ended just before midnight.
3/29/2020 7:00 AM 0.00 0.0 M 0.0 M
3/30/2020 7:00 AM 0.00 0.0 M 0.0 M
3/31/2020 7:00 AM T 0.0 M 0.0 M a brief and very light early-aftn shower
4/1/2020 7:00 AM 0.00 0.0 M 0.0 M
4/2/2020 7:00 AM 0.03 0.0 M 0.0 M Sunny until aftn, then mo cldy into evening. L-R- after midnight until near obs time, ZL- after about 05L, with 29F at obs time.
4/3/2020 7:00 AM 0.06 0.6 M 0.5 M light snow mid-aftn through early evening
4/4/2020 7:00 AM 0.00 0.0 M 0.0 M
4/5/2020 7:00 AM 0.00 0.0 M 0.0 M
4/6/2020 7:00 AM 0.00 0.0 M 0.0 M
4/7/2020 7:00 AM 0.00 0.0 M 0.0 M
4/8/2020 7:00 AM 0.00 0.0 M 0.0 M
4/9/2020 7:00 AM 0.00 0.0 M 0.0 M
4/10/2020 7:00 AM 0.00 0.0 M 0.0 M
4/11/2020 7:00 AM 0.00 0.0 M 0.0 M
4/12/2020 7:10 AM 0.29 4.1 M 4.0 M Warm day with sun, became ovc late aftn. FROPA ca 2230, S/S- B ca 0150, continued past obs time.
4/13/2020 7:00 AM 0.29 7.2 M 9.0 M Accum snow ended 0930 (1.2"/.05") with S-- until early aftn with some shadows, pavement dried. S- resumed, then S- mid-evening (0.3" 22L) and S until around 0630. 6.0"/.24"
4/14/2020 7:00 AM 0.09 1.4 M 5.0 M Light snow continued until evening, then cleared by midnight. Max depth 10", still 8-9" on deck furniture, etc. with cloudy max 27F, min this morning 11F.
4/15/2020 7:00 AM 0.00 0.0 M T M Sun and 47F max -> fast April melt!
4/16/2020 7:00 AM 1.07 9.3 M 9.5 0.95 Sunny early with high 59F, then mo cldy aftn. FROPA 17L quickly dropped temp to 40F, RW- changed to R-S- in about 25 min, then S-/S by mid-evening. Some melting at first, .12" liquid. Temp stayed near freezing until about 05L.
4/17/2020 7:00 AM 0.23 3.0 M 10.0 M Light snow all day, sun ocnly vsbl through clouds. Snow ended early evening, cleared by mid-evening and temp dropped to a 9F low this morning.
4/18/2020 7:00 AM 0.00 0.0 M 5.5 M
4/19/2020 7:00 AM T 0.0 M 1.5 M ovc most of day; mid-afternoon RW--
4/20/2020 7:00 AM 0.00 0.0 M 0.0 M
4/21/2020 7:00 AM 0.00 0.0 M 0.0 M
4/22/2020 7:00 AM 0.00 0.0 M 0.0 M
4/23/2020 7:00 AM T 0.0 M 0.0 M a couple of light afternoon rain showers
4/24/2020 7:00 AM 0.11 0.0 M 0.0 M rain showers for a couple hours after midnight
4/25/2020 7:00 AM T 0.0 M 0.0 M a brief shower early afternoon
4/26/2020 7:00 AM T 0.0 M 0.0 M a brief am shower
4/27/2020 7:00 AM 0.00 0.0 M 0.0 M
4/28/2020 7:00 AM 0.00 0.0 M 0.0 M sunny, 80F max
4/29/2020 7:00 AM 0.00 0.0 M 0.0 M
4/30/2020 7:00 AM 0.00 0.0 M 0.0 M
5/1/2020 7:00 AM T 0.0 M 0.0 M thick wave clouds, then a quick gusty shower after sunset
5/2/2020 7:00 AM 0.00 0.0 M 0.0 M
5/3/2020 7:00 AM 0.23 0.0 M 0.0 M Mo ovc with some sun near mid-day. Brief L- early, then RW- early eve (.02"). TRW mid-evening with brief R+.
5/4/2020 7:00 AM 0.06 0.0 M 0.0 M A brief afternoon shower (T), then showers from 4 to 7 am. Quickly cleared at obs time.
5/5/2020 7:00 AM 0.00 0.0 M 0.0 M
5/6/2020 7:00 AM 0.00 0.0 M 0.0 M
5/7/2020 7:00 AM 0.00 0.0 M 0.0 M
5/8/2020 7:00 AM 0.00 0.0 M 0.0 M
5/9/2020 7:00 AM 0.00 0.0 M 0.0 M
5/10/2020 7:00 AM 0.00 0.0 M 0.0 M
5/11/2020 7:00 AM 0.00 0.0 M 0.0 M
5/12/2020 7:00 AM 0.12 0.0 M 0.0 M ovc and in 30s until aftn w/R- (.11"), brief clearing, then cloudy evening and a quick shower around sunrise
5/13/2020 7:00 AM 0.00 0.0 M 0.0 M
5/14/2020 7:00 AM 0.00 0.0 M 0.0 M
5/15/2020 7:00 AM 0.07 0.0 M 0.0 M several light morning showers, .02" total. Thunder SW early aftn, then TRW-A mid aftn (A 1/4" 1455-1458). Another short RW-A (A 1/8") early evening.
5/16/2020 7:00 AM 0.13 0.0 M 0.0 M A brief RW- early aftn, then a couple TRW- early evening with some moderate rain.
5/17/2020 7:00 AM 0.00 0.0 M 0.0 M
5/18/2020 7:00 AM 0.00 0.0 M 0.0 M
5/19/2020 7:00 AM 0.00 0.0 M 0.0 M
5/20/2020 7:00 AM 0.00 0.0 M 0.0 M
5/21/2020 7:00 AM 0.00 0.0 M 0.0 M
5/22/2020 7:00 AM 0.00 0.0 M 0.0 M
5/23/2020 7:00 AM 0.00 0.0 M 0.0 M
5/24/2020 7:00 AM T 0.0 M 0.0 M a brief few drops early evening
5/25/2020 7:00 AM 0.67 0.0 M 0.0 M Brief shower late morning (T); afternoon - early evening rain. Heaviest rain late afternoon, with .32" in the 4 - 5 pm hour.
5/26/2020 7:00 AM 0.00 0.0 M 0.0 M Spotty very light afternoon showers, but none hit here as far as I know!
5/27/2020 7:00 AM 0.00 0.0 M 0.0 M
5/28/2020 7:00 AM 0.01 0.0 M 0.0 M an afternoon shower (T), evening thundershower (.01"), the latter perhaps with a few small hailstones (heard? but not seen)
5/29/2020 7:00 AM T 0.0 M 0.0 M Low clouds developed shortly after obs time, remained cloudy except for mid aftn. Brief RW- mid evening.
5/30/2020 7:00 AM 0.00 0.0 M 0.0 M Mostly sunny. Afternoon rain passed by near W -> S.
5/31/2020 7:00 AM 0.10 0.0 M 0.0 M a few drops early evening, then a mid-evening thundershower
6/1/2020 7:00 AM T 0.0 M 0.0 M gusty winds followed by a very light thundershower late afternoon
6/2/2020 7:00 AM 0.00 0.0 M 0.0 M
6/3/2020 7:00 AM T 0.0 M 0.0 M a light shower late afternoon
6/4/2020 7:00 AM 0.00 0.0 M 0.0 M
6/5/2020 7:00 AM T 0.0 M 0.0 M After early 89F max, gusty outflow hit at 1312 with blowing dust & broken twigs. TRW- followed with little rain, but temp remained in U70s rest of day.
6/6/2020 7:00 AM 0.00 0.0 M 0.0 M
6/7/2020 7:00 AM 0.01 0.0 M 0.0 M Thick overcast developed near sunrise, breezy with a light morning shower. Stayed cool until early afternoon, when cleared for a while. Windy with line of thundershowers mid-afternoon, but only .01" here.
6/8/2020 7:00 AM 0.00 0.0 M 0.0 M mostly sunny & occasionally windy
6/9/2020 7:00 AM 0.60 0.0 M 0.0 M Sunny until mid-afternoon. A couple very light showers late afternoon, FROPA at 19L dropped temp 10F in an hour. TRW- began 2215 with considerable lightning until near midnight. Rain continued all night, becoming quite light at obs time.
6/10/2020 7:00 AM 0.01 0.0 M 0.0 M light rain ended early, sky mostly cleared by mid-morning, strong north wind continued through afternoon
6/11/2020 7:00 AM 0.00 0.0 M 0.0 M
6/12/2020 7:00 AM 0.00 0.0 M 0.0 M
6/13/2020 7:00 AM 0.00 0.0 M 0.0 M
6/14/2020 7:00 AM T 0.0 M 0.0 M Two or three very light showers early afternoon. Some thunder.
6/15/2020 7:00 AM 0.00 0.0 M 0.0 M
6/16/2020 7:00 AM 0.00 0.0 M 0.0 M
6/17/2020 7:00 AM 0.00 0.0 M 0.0 M
6/18/2020 7:00 AM 0.00 0.0 M 0.0 M
6/19/2020 7:00 AM 0.57 0.0 M 0.0 M afternoon & evening rain, then a shower around dawn
6/20/2020 7:00 AM 0.06 0.0 M 0.0 M an afternoon shower
6/21/2020 7:00 AM 0.00 0.0 M 0.0 M
6/22/2020 7:00 AM 0.04 0.0 M 0.0 M After a cool morning with thick wave clouds, some spots of sun followed by a couple of showers. A thundershower late afternoon looked dark but dropped only .04" with the heavier rain passing by on the south.
6/23/2020 7:00 AM 0.00 0.0 M 0.0 M
6/24/2020 7:00 AM 0.00 0.0 M 0.0 M
6/25/2020 7:00 AM 0.02 0.0 M 0.0 M Sunny early, clouds spread from mountains late afternoon. Early evening thunderstorm with little rain but lots of wind. Temp dropped from max of 91F to low 70s.
6/26/2020 7:00 AM 0.00 0.0 M 0.0 M gusty storms aftn/eve, but rain passed near south
6/27/2020 7:00 AM 0.24 0.0 M 0.0 M cloudy afternoon/eve with two periods of showers/thundershowers
6/28/2020 7:00 AM 0.00 0.0 M 0.0 M
6/29/2020 7:00 AM T 0.0 M 0.0 M light thundershowers late aftn
6/30/2020 7:00 AM 0.00 0.0 M 0.0 M
7/1/2020 7:00 AM 0.03 0.0 M 0.0 M brief morning shower during which temp dropped to 59F, cleared with 82F max, then a period of clouds late afternoon
7/2/2020 7:00 AM 0.00 0.0 M 0.0 M
7/3/2020 7:00 AM 0.00 0.0 M 0.0 M
7/4/2020 7:00 AM 0.00 0.0 M 0.0 M afternoon showers in area, mostly south and east
7/5/2020 7:00 AM 0.00 0.0 M 0.0 M
7/6/2020 7:00 AM 0.00 0.0 M 0.0 M
7/7/2020 7:00 AM T 0.0 M 0.0 M mo cldy aftn; a few late-afternoon drops
7/8/2020 7:00 AM T 0.0 M 0.0 M a few raindrops with gusty winds early afternoon
7/9/2020 7:00 AM 0.00 0.0 M 0.0 M sunny, hot, dry!
7/10/2020 7:00 AM 0.00 0.0 M 0.0 M
7/11/2020 7:00 AM 0.00 0.0 M 0.0 M
7/12/2020 7:00 AM 0.00 0.0 M 0.0 M
7/13/2020 7:00 AM T 0.0 M 0.0 M a drop or three early afternoon
7/14/2020 7:00 AM 0.01 0.0 M 0.0 M three showers, only the first of which produced measurable rain
7/15/2020 7:00 AM 0.04 0.0 M 0.0 M afternoon showers, plus near midnight
7/16/2020 7:00 AM 0.00 0.0 M 0.0 M morning fog & clouds
7/17/2020 7:00 AM 0.00 0.0 M 0.0 M
7/18/2020 7:00 AM 0.00 0.0 M 0.0 M
7/19/2020 7:00 AM T 0.0 M 0.0 M a brief very light rain shower mid afternoon
7/20/2020 7:00 AM T 0.0 M 0.0 M a late afternoon shower
7/21/2020 7:00 AM 0.00 0.0 M 0.0 M
7/22/2020 7:00 AM 0.00 0.0 M 0.0 M
7/23/2020 7:00 AM 0.02 0.0 M 0.0 M early evening thundershower
7/24/2020 7:00 AM 0.00 0.0 M 0.0 M
7/25/2020 7:00 AM 0.12 0.0 M 0.0 M some spits early to mid afternoon, then late afternoon (.05") and evening (.07") showers
7/26/2020 7:00 AM 0.14 0.0 M 0.0 M afternoon rain (.11"), late evening & early am showers
7/27/2020 7:00 AM T 0.0 M 0.0 M
7/28/2020 7:00 AM 0.00 0.0 M 0.0 M
7/29/2020 7:00 AM 0.02 0.0 M 0.0 M a couple of afternoon showers
7/30/2020 7:00 AM T 0.0 M 0.0 M a smattering of big splats in a very brief late afternoon shower
7/31/2020 7:00 AM T 0.0 M 0.0 M a late aftn RW-- and an early evening TRW-- (lots of activity passing by from N to E)
8/1/2020 7:00 AM 0.01 0.0 M 0.0 M Several showers passed late afternoon through late evening. Missed all the heavy stuff.
8/2/2020 7:00 AM T 0.0 M 0.0 M lots of activity in the area afternoon/evening, but next to nothing here
8/3/2020 7:00 AM T 0.0 M 0.0 M two very light afternoon showers
8/4/2020 7:00 AM T 0.0 M 0.0 M an afternoon shower and an evening thundershower
8/5/2020 7:00 AM T 0.0 M 0.0 M a light late-aftn shower; big stuff passed by to east
8/6/2020 7:00 AM T 0.0 M 0.0 M a period of afternoon drips with thunder; about half a hundredth!
8/7/2020 7:00 AM T 0.0 M 0.0 M three very light afternoon showers
8/8/2020 7:00 AM 0.00 0.0 M 0.0 M
8/9/2020 7:00 AM 0.00 0.0 M 0.0 M
8/10/2020 7:00 AM 0.00 0.0 M 0.0 M
8/11/2020 7:00 AM T 0.0 M 0.0 M a round of early-evening thundershowers
8/12/2020 7:00 AM 0.00 0.0 M 0.0 M
8/13/2020 7:00 AM 0.00 0.0 M 0.0 M
8/14/2020 7:00 AM 0.00 0.0 M 0.0 M
8/15/2020 7:00 AM 0.00 0.0 M 0.0 M
8/16/2020 7:00 AM 0.00 0.0 M 0.0 M
8/17/2020 7:00 AM 0.00 0.0 M 0.0 M
8/18/2020 7:00 AM 0.00 0.0 M 0.0 M
8/19/2020 7:00 AM 0.00 0.0 M 0.0 M
8/20/2020 7:00 AM 0.00 0.0 M 0.0 M passing showers afternoon with thunder - but no precip
8/21/2020 7:00 AM 0.09 0.0 M 0.0 M First rain worth mentioning this month. Whoo hoo! Had a few drops twice in the afternoon, then a light mid-evening thundershower.
8/22/2020 7:00 AM 0.00 0.0 M 0.0 M
8/23/2020 7:00 AM 0.00 0.0 M 0.0 M
8/24/2020 7:00 AM 0.00 0.0 M 0.0 M another warm & smoky day
8/25/2020 7:00 AM 0.00 0.0 M 0.0 M
8/26/2020 7:00 AM 0.00 0.0 M 0.0 M showers threatened afternoon, but nada
8/27/2020 7:00 AM T 0.0 M 0.0 M Passing thundershowers late aftn, followed by a brief shower. Breezy & cooler evening, with good visibility and no smoke!
8/28/2020 7:00 AM 0.05 0.0 M 0.0 M late afternoon thundershower - with rainbow!
8/29/2020 7:00 AM 0.04 0.0 M 0.0 M light rain showers mid afternoon into early evening; a rumble of thunder late afternoon
8/30/2020 7:00 AM 0.02 0.0 M 0.0 M Cloudy morning with rain showers (.02"). Another light shower mid afternoon, then sunny. An evening shower passed south.
8/31/2020 7:00 AM T 0.0 M 0.0 M brief early-evening shower, then light shower behind 2155 MDT FROPA.
9/1/2020 7:00 AM 0.08 0.0 M 0.0 M afternoon shower/thundershower (.02"); late evening rain (.06")
9/2/2020 7:00 AM 0.00 0.0 M 0.0 M sunny and very pleasant - a fine start to September!
9/3/2020 7:00 AM 0.00 0.0 M 0.0 M SVR CLR!
9/4/2020 7:00 AM 0.00 0.0 M 0.0 M
9/5/2020 7:00 AM 0.00 0.0 M 0.0 M
9/6/2020 7:00 AM 0.00 0.0 M 0.0 M hot day, smoke north at sunset
9/7/2020 7:00 AM 0.00 0.0 M 0.0 M sunny and hot, then thick smoke with ash fall
9/8/2020 7:10 AM 0.30 0.0 M 0.0 M Very warm (88F max), sunny, thin layer of smoke overhead afternoon. FROPA 1630 dropped temp 10F in a half hour with N wind through evening. R- began late evening and continued through night. 34F at obs time.
9/9/2020 7:00 AM 0.44 1.6 M T M Light rain with ocnl R-S- with a lull 14-15L. Some S- by 16L with accum beginning 17L. 0.6" by 18L +1.0" 22L. SE by midnight, then some SWU/RWU during night. Earliest snow in Lafayette since I moved to town in 1979.
9/10/2020 7:00 AM T T M 0.0 M very light morning snow, then stayed overcast with high of 41F
9/11/2020 7:00 AM 0.00 0.0 M 0.0 M
9/12/2020 7:00 AM 0.00 0.0 M 0.0 M
9/13/2020 7:00 AM 0.00 0.0 M 0.0 M
9/14/2020 7:00 AM 0.00 0.0 M 0.0 M
9/15/2020 7:00 AM 0.00 0.0 M 0.0 M
9/16/2020 7:00 AM 0.00 0.0 M 0.0 M
9/17/2020 7:00 AM 0.00 0.0 M 0.0 M
9/18/2020 7:00 AM 0.00 0.0 M 0.0 M another warm hazy/smoky day
9/19/2020 7:00 AM 0.00 0.0 M 0.0 M
9/20/2020 7:00 AM 0.00 0.0 M 0.0 M
9/21/2020 7:00 AM T 0.0 M 0.0 M mo cldy early; a few drops from a late afternoon shower
9/22/2020 7:00 AM 0.00 0.0 M 0.0 M
9/23/2020 7:00 AM 0.00 0.0 M 0.0 M
9/24/2020 7:00 AM 0.00 0.0 M 0.0 M
9/25/2020 7:00 AM 0.00 0.0 M 0.0 M
9/26/2020 7:00 AM 0.00 0.0 M 0.0 M crazy warm night - min 66F at 01L, then rose to 75F at 0230,72F at obs time
9/27/2020 7:00 AM 0.00 0.0 M 0.0 M windy mid-day/aftn - brought wildfire smoke in by evening
9/28/2020 7:00 AM 0.01 0.0 M 0.0 M Overcast much of day, but for a couple of hours early afternoon. Showers late aftn to early eve. Cleared with 36F min & roof frost.
9/29/2020 7:00 AM 0.00 0.0 M 0.0 M
9/30/2020 7:00 AM 0.00 0.0 M 0.0 M sunny with some smoke overhead late aftn



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
5/14/2020 2:55 PM little rain with hail, moderate rain followed for 3 or 4 min, then light rain 1/4" Pea Size 1/4" Pea Size 1/4" Pea Size Hard|White Ice 3 1min no damage Continuous True Before rain Same time as smaller hail