Station Overview Station Location
Station Number CO-BO-306 Latitude 40.10444444
Station Name Niwot 0.9 NE Longitude -105.1438889
County Boulder Elevation (ft) 5141



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 1.02 1.06 32 0.68 12 0.38 20 6 4 0 0.0 0 0
Nov 19 0.85 0.93 28 0.76 6 0.17 22 5 2 1 0.0 0 0
Dec 19 0.58 0.15 31 0.00 0 0.15 31 3 0 0 0.0 0 0
Jan 20 0.42 0.09 30 0.09 9 0.00 21 4 1 0 0.0 0 0
Feb 20 0.50 1.06 23 0.47 6 0.59 17 5 3 0 7.1 2 1
March 20 1.55 0.33 17 0.00 4 0.33 13 3 0 0 0.0 0 0
April 20 1.85 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 20 2.33 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 20 1.79 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 20 1.32 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 20 1.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 20 1.45 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 15.03" 3.62" 161 days 2.00" 37 1.62" 124 days 26 10 days 1 days 7.1" 2 days 1 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 0.00 0.23
10/2/2019 0.25
10/3/2019 **
10/4/2019 **
10/5/2019 **
10/6/2019 **
10/7/2019 0.00
10/8/2019 0.00
10/9/2019 0.00
10/10/2019 0.07
10/11/2019 0.10
10/12/2019 **
10/13/2019 **
10/14/2019 0.00
10/15/2019 0.00
10/16/2019 0.00
10/17/2019 0.00
10/18/2019 **
10/19/2019 **
10/20/2019 **
10/21/2019 **
10/22/2019 0.00
10/23/2019 0.00
10/24/2019 0.26
10/25/2019
10/26/2019 **
10/27/2019 **
10/28/2019 **
10/29/2019 0.15
10/30/2019 **
10/31/2019 0.00 0.00
11/1/2019 0.00
11/2/2019 **
11/3/2019 **
11/4/2019 0.07
11/5/2019
11/6/2019
11/7/2019 **
11/8/2019 0.04
11/9/2019 **
11/10/2019 **
11/11/2019 0.06
11/12/2019 **
11/13/2019 0.00
11/14/2019 T
11/15/2019 **
11/16/2019 **
11/17/2019 **
11/18/2019 0.00
11/19/2019 0.00
11/20/2019 0.00
11/21/2019 0.65
11/22/2019 0.11
11/23/2019 **
11/24/2019 **
11/25/2019 **
11/26/2019 **
11/27/2019 **
11/28/2019 **
11/29/2019 **
11/30/2019 **
12/1/2019 **
12/2/2019 **
12/3/2019 0.14
12/4/2019 **
12/5/2019 0.01
12/6/2019 **
12/7/2019 **
12/8/2019 **
12/9/2019 **
12/10/2019 **
12/11/2019 **
12/12/2019 0.00
12/13/2019 **
12/14/2019 **
12/15/2019 **
12/16/2019 **
12/17/2019 **
12/18/2019 **
12/19/2019 **
12/20/2019 **
12/21/2019 **
12/22/2019 **
12/23/2019 **
12/24/2019 **
12/25/2019 **
12/26/2019 **
12/27/2019 **
12/28/2019 **
12/29/2019 **
12/30/2019 **
12/31/2019 **
Day of YearDaily PrcpMultiday Prcp
1/1/2020 **
1/2/2020 **
1/3/2020 **
1/4/2020 **
1/5/2020 **
1/6/2020 **
1/7/2020 **
1/8/2020 **
1/9/2020 0.00
1/10/2020 0.00
1/11/2020 **
1/12/2020 **
1/13/2020 0.00
1/14/2020
1/15/2020 0.00
1/16/2020 0.00
1/17/2020 0.00
1/18/2020 **
1/19/2020 **
1/20/2020 **
1/21/2020 0.00
1/22/2020 0.00
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 **
1/26/2020 **
1/27/2020 **
1/28/2020 **
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 0.09
2/1/2020 **
2/2/2020 **
2/3/2020 0.04
2/4/2020 0.26
2/5/2020 **
2/6/2020 **
2/7/2020 0.01
2/8/2020 **
2/9/2020 **
2/10/2020 0.34
2/11/2020 0.15
2/12/2020 **
2/13/2020 0.18
2/14/2020 **
2/15/2020 **
2/16/2020 **
2/17/2020 **
2/18/2020 **
2/19/2020 0.02
2/20/2020 0.06
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020 0.00
2/26/2020 0.00
2/27/2020 0.00
2/28/2020
2/29/2020
3/1/2020
3/2/2020 **
3/3/2020 0.00
3/4/2020 M
3/5/2020 0.00
3/6/2020 0.00
3/7/2020 **
3/8/2020 **
3/9/2020 **
3/10/2020 0.21
3/11/2020 0.00
3/12/2020 0.00
3/13/2020 **
3/14/2020 **
3/15/2020 **
3/16/2020 **
3/17/2020 **
3/18/2020 **
3/19/2020 0.12
3/20/2020
3/21/2020
3/22/2020
3/23/2020
3/24/2020
3/25/2020
3/26/2020
3/27/2020
3/28/2020
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020
4/7/2020
4/8/2020
4/9/2020
4/10/2020
4/11/2020
4/12/2020 M
4/13/2020
4/14/2020
4/15/2020
4/16/2020
4/17/2020
4/18/2020
4/19/2020
4/20/2020
4/21/2020
4/22/2020
4/23/2020
4/24/2020
4/25/2020
4/26/2020
4/27/2020
4/28/2020
4/29/2020
4/30/2020
5/1/2020
5/2/2020
5/3/2020
5/4/2020
5/5/2020
5/6/2020
5/7/2020
5/8/2020
5/9/2020
5/10/2020
5/11/2020
5/12/2020
5/13/2020
5/14/2020
5/15/2020
5/16/2020
5/17/2020
5/18/2020
5/19/2020
5/20/2020
5/21/2020
5/22/2020
5/23/2020
5/24/2020
5/25/2020
5/26/2020
5/27/2020
5/28/2020
5/29/2020
5/30/2020
5/31/2020
6/1/2020
6/2/2020
6/3/2020
6/4/2020
6/5/2020
6/6/2020
6/7/2020
6/8/2020
6/9/2020
6/10/2020
6/11/2020
6/12/2020
6/13/2020
6/14/2020
6/15/2020
6/16/2020
6/17/2020
6/18/2020
6/19/2020
6/20/2020
6/21/2020
6/22/2020
6/23/2020
6/24/2020
6/25/2020
6/26/2020
6/27/2020
6/28/2020
6/29/2020
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020
7/2/2020
7/3/2020
7/4/2020
7/5/2020
7/6/2020
7/7/2020
7/8/2020
7/9/2020
7/10/2020
7/11/2020
7/12/2020
7/13/2020
7/14/2020
7/15/2020
7/16/2020
7/17/2020
7/18/2020
7/19/2020
7/20/2020
7/21/2020
7/22/2020
7/23/2020
7/24/2020
7/25/2020
7/26/2020
7/27/2020
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020
8/2/2020
8/3/2020
8/4/2020
8/5/2020
8/6/2020
8/7/2020
8/8/2020
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020
8/18/2020
8/19/2020
8/20/2020
8/21/2020
8/22/2020
8/23/2020
8/24/2020
8/25/2020
8/26/2020
8/27/2020
8/28/2020
8/29/2020
8/30/2020
8/31/2020
9/1/2020
9/2/2020
9/3/2020
9/4/2020
9/5/2020
9/6/2020
9/7/2020
9/8/2020
9/9/2020
9/10/2020
9/11/2020
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
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
10/1/2019 7:00 AM 0.00 0.0 M M M
10/2/2019 7:00 AM 0.25 M M M M cold, damp, drizzle, overcast. MrH
10/8/2019 7:00 AM 0.00 0.0 M M M cold, dry clear. MrH
10/9/2019 7:00 AM 0.00 0.0 M M M Cloudy day, 65-70°F (Harrison Bartlett, Jon Fuller)
10/10/2019 7:00 AM 0.07 M M M M Cold, overcast, snowing. Value from melted snow. MrH
10/11/2019 7:00 AM 0.10 M M M M Cold, frost on gauge, value determined by melting frozen gauge contents. MrH
10/15/2019 8:30 AM 0.00 0.0 M M M Sunny, slight wind chill, no clouds
10/16/2019 7:00 AM 0.00 0.0 M M M Cool, mild, dry. MrH
10/17/2019 7:00 AM 0.00 0.0 M M M 90% cloud cover, light breeze, 56° F, (Harrison, Sosa)
10/23/2019 7:00 AM 0.00 0.0 M M M 50% cloud cover, around 50°F, no humidity. (Harrison Bartlett, Luis Sosa)
10/24/2019 7:00 AM 0.26 M M M M Melted snow MrH
10/31/2019 7:00 AM 0.00 0.0 M M M Mostly cloudy sky
11/1/2019 7:00 AM 0.00 0.0 M M M Cold, frosty, ice crystals around the top of gauge. MrH
11/14/2019 7:00 AM T M M M M Foggy morning, cloudy sky (Harrison, Angel)
11/19/2019 7:00 AM 0.00 0.0 M M M Mostly clear skies with a few scattered clouds, cooler air Lauren Cranny
11/20/2019 9:00 AM 0.00 0.0 M M M Mildly Cloudy, sunny Dennis Pozhidaev
11/21/2019 7:00 AM 0.65 M M M M Cold, frozen contents in gauge, rain/snow prior, no wind, 100% cloud cover Will Douthitt
11/22/2019 7:00 AM 0.11 M M M M Snowy, Crispy, Crunchy, White.
1/10/2020 7:00 AM 0.00 0.0 M M M Cold, partly cloudy, dry. MrH
1/15/2020 7:00 AM 0.00 0.0 M M M Dry,sunny and clear skys. -jonathan c. Block 5
1/16/2020 7:00 AM 0.00 0.0 M M M Cold, dry and bleak. MrH
1/17/2020 7:00 AM 0.00 0.0 M M M Crisp air, clear skies, little cloud cover. -Harrison
1/22/2020 8:00 AM 0.00 0.0 M M M Cloudy and dry. -jon c block 5
1/23/2020 7:00 AM 0.00 0.0 M M M Dry, cold, calm. MrH
1/24/2020 8:00 AM 0.00 0.0 M M M Partially cloudy, dry, cold, Dennis Pozhidaev
1/30/2020 7:00 AM 0.00 0.0 M M M Foggy, gauge covered in frost, very cold. Harrison and denis
1/31/2020 7:00 AM 0.09 M M M M
2/4/2020 7:00 AM 0.26 5.6 M M M Cold, snowing, frozen gauge. Still snowing. MrH
2/11/2020 7:00 AM 0.15 M M M M Cold, dry, minimal cloud cover Dennis Pozhidaev
2/20/2020 7:00 AM 0.06 1.5 0.06 5.5 M melted snow value. MrH
2/25/2020 7:00 AM 0.00 0.0 M M M Cold, windy, cloudy -Odalyss
2/26/2020 7:00 AM 0.00 0.0 M M M Cold, clear sky, frost building on gauge -Carson S.
2/27/2020 7:00 AM 0.00 0.0 M M M It was a clear sky , cold , and sunny - Angelica Garcia
3/4/2020 7:00 AM M M M M M Sunny and cold air -Carter {EDIT: Observer reported 0.16 for new precip. Surrounding reports of 0.00's indicate this could be a date error or a multi-day report. Changed report of 0.16 to NA until observer can be contacted to verify. Submission Time Before EDIT: 3/04/2020 8:00 AM CoCoSTAFF DNT}
3/5/2020 7:00 AM 0.00 0.0 M M M Dry, cold, overcast. MrH
3/6/2020 7:00 AM 0.00 0.0 M M M Trace cool morning with partly cloudy sky -Dee
3/11/2020 7:00 AM 0.00 0.0 0.00 0.0 0.00 clear sky, little breeze - Wilson
3/12/2020 8:30 AM 0.00 0.0 M M M breeze, light wind and 30% cloud cover. -Jonathan Carpenter.
4/12/2020 7:00 AM M M M M M {EDIT: Observer reported 0.00 for new precip/new snowfall. QPE data and surrounding reports of snow indicate this could be a typo. Changed reports of 0.00 to NA until observer can be contacted to verify. Submission Time Before EDIT: 4/12/2020 12:42 PM CoCoSTAFF DNT}



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/28/2019 10/01/2019 7:00 AM 4 0.23 M M Cool, cloudy, drizzle MrH
10/3/2019 10/07/2019 7:00 AM 5 0.00 M 0.00 Clear skies no trace of clouds. - Erick Fernandez
10/12/2019 10/14/2019 7:00 AM 3 0.00 M M cool, dry, clear. MrH
10/18/2019 10/22/2019 7:00 AM 5 0.00 M M cold and dry, MrH
10/26/2019 10/29/2019 7:00 AM 4 0.15 M M Cold snowing overcas
10/30/2019 10/31/2019 7:00 AM 2 0.00 M M Cloud cover 70% (Harrison, Van)
11/2/2019 11/04/2019 7:00 AM 3 0.07 M M Its a sunny day out today and the weekend stayed cold but no snow. -Jonathan
11/7/2019 11/08/2019 7:00 AM 2 0.04 1.0 T Cold,hard snow on ground, contents frozen in gage -Claudia
11/9/2019 11/11/2019 7:00 AM 3 0.06 2.1 M Frost on gauge, cold, clear. MrH . Late start day due to weather.
11/12/2019 11/13/2019 7:00 AM 2 0.00 M M Clear, mild and dry. Mr Hollins
11/15/2019 11/18/2019 7:00 AM 4 0.00 M M Hazy sky, no wind, cool air, sparse cloud cover. (Harrison)
11/23/2019 12/03/2019 7:00 AM 11 0.14 M M Snow on ground, crisp air, little cloud cover. Harrison
12/4/2019 12/05/2019 7:00 AM 2 0.01 M M cloudy, cold, quite snowy. Jon C.
12/6/2019 12/12/2019 7:00 AM 7 0.00 M M Cold, dry and dreary. MrH
12/13/2019 1/09/2020 7:00 AM 28 0.00 M M cold, breezy, grey and dreary. MrH
1/11/2020 1/13/2020 7:00 AM 3 0.00 M M Very dry, cold and mostly cloudy. MrH
1/18/2020 1/21/2020 7:00 AM 4 0.00 M M Cool, dry and overcast. Mr. Hollins
1/25/2020 1/29/2020 7:00 AM 5 0.00 M M Cold, dry and overcast. MrHollins
2/1/2020 2/03/2020 7:00 AM 3 0.04 M M Snowy, cold, total sky coverage - Harrison
2/5/2020 2/07/2020 7:00 AM 3 0.01 M M Currently snowing and full coverage. Harrison
2/8/2020 2/10/2020 7:00 AM 3 0.34 1.2 M Frozen sample melted for measurement. seven degrees F J. Perez
2/12/2020 2/13/2020 9:00 AM 2 0.18 M M Cloudy and cold, snow covering most of the ground. -Lily
2/14/2020 2/19/2020 7:00 AM 6 0.02 2.0 0.00 Sky filled 100% with clouds.- Erick F
3/2/2020 3/03/2020 7:00 AM 2 0.00 M M Clear, sunny -Maddie Goff
3/7/2020 3/10/2020 8:00 AM 4 0.21 M M Rainy weekend with some frost in the mornings, bright and sunny later in the days. - Jonathan C.
3/13/2020 3/19/2020 7:00 AM 7 0.12 M M Raining, fog in distance, rare wind, moist. Will Douthitt



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