Station Overview Station Location
Station Number CO-BO-67 Latitude 39.999614
Station Name Boulder 4.7 E Longitude -105.179377
County Boulder Elevation (ft) 5325



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 16 1.31 0.37 31 0.37 31 0.00 0 0 5 1 0.0 0 0
Nov 16 1.00 0.40 30 0.40 30 0.00 0 0 3 1 4.2 1 2
Dec 16 0.70 0.71 31 0.71 31 0.00 0 0 4 5 10.9 4 12
Jan 17 0.57 1.14 31 1.14 31 0.00 0 0 6 3 15.2 7 12
Feb 17 0.54 0.43 28 0.43 28 0.00 0 0 3 4 7.7 3 3
March 17 1.80 0.84 31 0.84 31 0.00 0 0 7 1 0.0 0 0
April 17 2.13 2.64 30 2.64 30 0.00 0 0 11 1 14.1 4 4
May 17 2.38 6.05 31 6.05 31 0.00 0 0 16 2 7.2 1 2
June 17 1.84 0.37 30 0.37 30 0.00 0 0 5 2 0.0 0 0
July 17 1.68 0.82 31 0.82 31 0.00 0 0 6 7 0.0 0 0
Aug 17 1.64 1.25 31 1.25 31 0.00 0 0 12 8 0.0 0 0
Sept 17 1.40 1.44 30 0.48 28 0.96 2 1 8 2 0.0 0 0
Water Year Totals: 16.99" 16.46" 365 days 15.50" 363 0.96" 2 days 1 86 days 37 days 59.3" 20 days 35 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
10/1/2016 T
10/2/2016 0.00
10/3/2016 0.00
10/4/2016 0.00
10/5/2016 0.00
10/6/2016 0.15
10/7/2016 0.04
10/8/2016 0.00
10/9/2016 0.00
10/10/2016 0.00
10/11/2016 0.00
10/12/2016 0.14
10/13/2016 0.02
10/14/2016 0.00
10/15/2016 0.00
10/16/2016 0.00
10/17/2016 0.00
10/18/2016 0.00
10/19/2016 0.02
10/20/2016 0.00
10/21/2016 0.00
10/22/2016 0.00
10/23/2016 0.00
10/24/2016 0.00
10/25/2016 0.00
10/26/2016 0.00
10/27/2016 0.00
10/28/2016 0.00
10/29/2016 0.00
10/30/2016 0.00
10/31/2016 0.00
11/1/2016 0.00
11/2/2016 T
11/3/2016 0.00
11/4/2016 0.00
11/5/2016 0.00
11/6/2016 0.00
11/7/2016 0.00
11/8/2016 0.00
11/9/2016 0.00
11/10/2016 0.00
11/11/2016 0.00
11/12/2016 0.00
11/13/2016 0.00
11/14/2016 0.00
11/15/2016 0.00
11/16/2016 0.00
11/17/2016 0.00
11/18/2016 0.33
11/19/2016 0.00
11/20/2016 0.00
11/21/2016 0.00
11/22/2016 0.01
11/23/2016 0.06
11/24/2016 0.00
11/25/2016 0.00
11/26/2016 0.00
11/27/2016 0.00
11/28/2016 0.00
11/29/2016 0.00
11/30/2016 0.00
12/1/2016 0.00
12/2/2016 0.00
12/3/2016 T
12/4/2016 0.00
12/5/2016 0.00
12/6/2016 0.00
12/7/2016 0.25
12/8/2016 T
12/9/2016 0.00
12/10/2016 0.00
12/11/2016 0.05
12/12/2016 0.01
12/13/2016 0.00
12/14/2016 T
12/15/2016 T
12/16/2016 0.00
12/17/2016 0.40
12/18/2016 0.00
12/19/2016 0.00
12/20/2016 0.00
12/21/2016 0.00
12/22/2016 0.00
12/23/2016 0.00
12/24/2016 0.00
12/25/2016 0.00
12/26/2016 T
12/27/2016 0.00
12/28/2016 0.00
12/29/2016 0.00
12/30/2016 0.00
12/31/2016 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.00
1/2/2017 0.00
1/3/2017 0.02
1/4/2017 T
1/5/2017 0.65
1/6/2017 0.10
1/7/2017 0.00
1/8/2017 0.00
1/9/2017 0.00
1/10/2017 0.00
1/11/2017 0.00
1/12/2017 T
1/13/2017 T
1/14/2017 0.00
1/15/2017 0.00
1/16/2017 0.28
1/17/2017 0.08
1/18/2017 0.00
1/19/2017 0.00
1/20/2017 0.00
1/21/2017 0.00
1/22/2017 0.00
1/23/2017 0.00
1/24/2017 0.00
1/25/2017 0.01
1/26/2017 0.00
1/27/2017 0.00
1/28/2017 0.00
1/29/2017 0.00
1/30/2017 0.00
1/31/2017 0.00
2/1/2017 0.00
2/2/2017 0.04
2/3/2017 T
2/4/2017 T
2/5/2017 0.00
2/6/2017 0.00
2/7/2017 0.00
2/8/2017 0.00
2/9/2017 0.00
2/10/2017 0.00
2/11/2017 0.00
2/12/2017 T
2/13/2017 0.00
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.00
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 0.00
2/20/2017 T
2/21/2017 0.00
2/22/2017 0.00
2/23/2017 0.00
2/24/2017 0.38
2/25/2017 0.01
2/26/2017 0.00
2/27/2017 0.00
2/28/2017 0.00
3/1/2017 0.00
3/2/2017 0.00
3/3/2017 0.00
3/4/2017 0.00
3/5/2017 0.00
3/6/2017 0.00
3/7/2017 0.00
3/8/2017 0.00
3/9/2017 0.00
3/10/2017 0.00
3/11/2017 0.01
3/12/2017 0.03
3/13/2017 0.00
3/14/2017 0.00
3/15/2017 0.00
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.00
3/19/2017 0.00
3/20/2017 0.00
3/21/2017 0.00
3/22/2017 T
3/23/2017 0.00
3/24/2017 0.23
3/25/2017 0.00
3/26/2017 0.00
3/27/2017 0.04
3/28/2017 0.16
3/29/2017 0.34
3/30/2017 0.00
3/31/2017 0.03
Day of YearDaily PrcpMultiday Prcp
4/1/2017 0.45
4/2/2017 0.00
4/3/2017 0.03
4/4/2017 0.61
4/5/2017 0.50
4/6/2017 0.00
4/7/2017 0.00
4/8/2017 0.00
4/9/2017 0.00
4/10/2017 0.00
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 0.00
4/14/2017 0.00
4/15/2017 0.00
4/16/2017 0.00
4/17/2017 0.00
4/18/2017 0.00
4/19/2017 0.00
4/20/2017 0.00
4/21/2017 0.22
4/22/2017 0.11
4/23/2017 T
4/24/2017 0.00
4/25/2017 0.14
4/26/2017 0.13
4/27/2017 0.00
4/28/2017 0.12
4/29/2017 0.16
4/30/2017 0.17
5/1/2017 0.00
5/2/2017 0.00
5/3/2017 0.06
5/4/2017 0.12
5/5/2017 0.00
5/6/2017 0.00
5/7/2017 0.00
5/8/2017 0.03
5/9/2017 0.63
5/10/2017 0.03
5/11/2017 0.26
5/12/2017 0.00
5/13/2017 0.00
5/14/2017 0.00
5/15/2017 T
5/16/2017 0.00
5/17/2017 0.10
5/18/2017 1.88
5/19/2017 1.98
5/20/2017 T
5/21/2017 0.00
5/22/2017 0.27
5/23/2017 0.15
5/24/2017 0.00
5/25/2017 0.00
5/26/2017 0.33
5/27/2017 0.00
5/28/2017 0.15
5/29/2017 0.02
5/30/2017 0.03
5/31/2017 0.01
6/1/2017 0.00
6/2/2017 0.13
6/3/2017 0.04
6/4/2017 0.00
6/5/2017 0.00
6/6/2017 0.03
6/7/2017 0.00
6/8/2017 T
6/9/2017 0.00
6/10/2017 0.00
6/11/2017 0.00
6/12/2017 0.00
6/13/2017 0.00
6/14/2017 0.00
6/15/2017 0.00
6/16/2017 0.00
6/17/2017 0.00
6/18/2017 0.00
6/19/2017 0.00
6/20/2017 0.00
6/21/2017 0.00
6/22/2017 0.00
6/23/2017 0.15
6/24/2017 T
6/25/2017 0.00
6/26/2017 0.00
6/27/2017 0.00
6/28/2017 0.00
6/29/2017 0.00
6/30/2017 0.02
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.00
7/2/2017 0.00
7/3/2017 T
7/4/2017 T
7/5/2017 0.00
7/6/2017 0.00
7/7/2017 0.00
7/8/2017 T
7/9/2017 0.00
7/10/2017 0.00
7/11/2017 T
7/12/2017 0.00
7/13/2017 0.04
7/14/2017 0.00
7/15/2017 0.00
7/16/2017 0.02
7/17/2017 0.00
7/18/2017 0.00
7/19/2017 0.00
7/20/2017 0.00
7/21/2017 T
7/22/2017 0.10
7/23/2017 0.00
7/24/2017 0.00
7/25/2017 0.00
7/26/2017 0.12
7/27/2017 0.53
7/28/2017 0.00
7/29/2017 T
7/30/2017 0.01
7/31/2017 T
8/1/2017 0.00
8/2/2017 0.00
8/3/2017 0.03
8/4/2017 0.01
8/5/2017 0.05
8/6/2017 0.07
8/7/2017 0.19
8/8/2017 0.70
8/9/2017 0.05
8/10/2017 0.02
8/11/2017 0.06
8/12/2017 0.00
8/13/2017 T
8/14/2017 T
8/15/2017 T
8/16/2017 0.01
8/17/2017 0.04
8/18/2017 T
8/19/2017 0.00
8/20/2017 0.02
8/21/2017 0.00
8/22/2017 0.00
8/23/2017 0.00
8/24/2017 T
8/25/2017 T
8/26/2017 0.00
8/27/2017 T
8/28/2017 T
8/29/2017 0.00
8/30/2017 0.00
8/31/2017 0.00
9/1/2017 0.01
9/2/2017 0.00
9/3/2017 0.00
9/4/2017 0.00
9/5/2017 0.00
9/6/2017 0.00
9/7/2017 0.00
9/8/2017 0.00
9/9/2017 0.00
9/10/2017 0.00
9/11/2017 0.00
9/12/2017 0.00
9/13/2017 0.00
9/14/2017 T
9/15/2017 0.00
9/16/2017 T
9/17/2017 0.01
9/18/2017 0.00
9/19/2017 0.00
9/20/2017 0.00
9/21/2017 0.00
9/22/2017 0.00
9/23/2017 0.01
9/24/2017 **
9/25/2017 0.96
9/26/2017 0.02
9/27/2017 0.02
9/28/2017 0.32
9/29/2017 0.03
9/30/2017 0.06



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 7:00 AM T 0.0 M 0.0 M period of R-- to R- 0745-0830 then possibly late afternoon
10/2/2016 7:00 AM 0.00 0.0 M 0.0 M
10/3/2016 7:00 AM 0.00 0.0 M 0.0 M
10/4/2016 7:00 AM 0.00 0.0 M 0.0 M
10/5/2016 7:00 AM 0.00 0.0 M 0.0 M low of 35
10/6/2016 7:00 AM 0.15 0.0 M 0.0 M not sure when rain began. R-- now and 41 at 0700
10/7/2016 7:00 AM 0.04 0.0 M 0.0 M .02" with some R-- then showers in the morning, another .02" ~1900 with showers (no snow). Then cleared with a thick frost and low of 28
10/8/2016 7:00 AM 0.00 0.0 M 0.0 M low of 33
10/9/2016 7:00 AM 0.00 0.0 M 0.0 M
10/10/2016 7:00 AM 0.00 0.0 M 0.0 M
10/11/2016 7:00 AM 0.00 0.0 M 0.0 M
10/12/2016 7:00 AM 0.14 0.0 M 0.0 M never saw any snow mixed in. low of 34. 35 at 0700 with very light drizzle
10/13/2016 7:00 AM 0.02 0.0 M 0.0 M morning drizzle and R-
10/14/2016 7:00 AM 0.00 0.0 M 0.0 M
10/15/2016 7:00 AM 0.00 0.0 M 0.0 M 70 at 9pm last night!
10/16/2016 7:00 AM 0.00 0.0 M 0.0 M high of 84
10/17/2016 7:00 AM 0.00 0.0 M 0.0 M
10/18/2016 7:00 AM 0.00 0.0 M 0.0 M
10/19/2016 7:00 AM 0.02 0.0 M 0.0 M estimated from nearby report
10/20/2016 7:00 AM 0.00 0.0 M 0.0 M
10/21/2016 7:00 AM 0.00 0.0 M 0.0 M
10/22/2016 7:00 AM 0.00 0.0 M 0.0 M
10/23/2016 7:00 AM 0.00 0.0 M 0.0 M
10/24/2016 7:00 AM 0.00 0.0 M 0.0 M
10/25/2016 7:00 AM 0.00 0.0 M 0.0 M
10/26/2016 7:00 AM 0.00 0.0 M 0.0 M
10/27/2016 7:00 AM 0.00 0.0 M 0.0 M
10/28/2016 7:00 AM 0.00 0.0 M 0.0 M
10/29/2016 7:00 AM 0.00 0.0 M 0.0 M
10/30/2016 7:00 AM 0.00 0.0 M 0.0 M
10/31/2016 7:00 AM 0.00 0.0 M 0.0 M
11/1/2016 7:00 AM 0.00 0.0 M 0.0 M high of 80
11/2/2016 7:00 AM T 0.0 M 0.0 M
11/3/2016 7:00 AM 0.00 0.0 M 0.0 M
11/4/2016 7:00 AM 0.00 0.0 M 0.0 M
11/5/2016 7:00 AM 0.00 0.0 M 0.0 M
11/6/2016 7:00 AM 0.00 0.0 M 0.0 M
11/7/2016 7:00 AM 0.00 0.0 M 0.0 M
11/8/2016 7:00 AM 0.00 0.0 M 0.0 M
11/9/2016 7:00 AM 0.00 0.0 M 0.0 M
11/10/2016 7:00 AM 0.00 0.0 M 0.0 M
11/11/2016 7:00 AM 0.00 0.0 M 0.0 M
11/12/2016 7:00 AM 0.00 0.0 M 0.0 M
11/13/2016 7:00 AM 0.00 0.0 M 0.0 M
11/14/2016 7:00 AM 0.00 0.0 M 0.0 M
11/15/2016 7:00 AM 0.00 0.0 M 0.0 M
11/16/2016 7:00 AM 0.00 0.0 M 0.0 M hi of 76
11/17/2016 7:00 AM 0.00 0.0 M 0.0 M
11/18/2016 7:00 AM 0.33 4.2 M 3.5 M some drizzle in the morning, first flakes aroun 1100, had about 2" by ~1600, over by 0730
11/19/2016 7:00 AM 0.00 0.0 M 2.0 M
11/20/2016 7:00 AM 0.00 0.0 M T M 1-2" left in the shade
11/21/2016 7:00 AM 0.00 0.0 M 0.0 M all snow gone after a high of 70 on Sunday
11/22/2016 7:00 AM 0.01 0.0 M 0.0 M looked like we missed everything but just picking up now, at 0715 going over to wet snow. 37 low and current at 0700.
11/23/2016 7:00 AM 0.06 T M 0.0 M R- at 0705 picked up briefly and mixed and very briefly went mostly to snow 0710-0715 before getting light again and going to R--. A slight amount of slush briefly accumulated.
11/24/2016 7:00 AM 0.00 0.0 M 0.0 M
11/25/2016 7:00 AM 0.00 0.0 M 0.0 M
11/26/2016 7:00 AM 0.00 0.0 M 0.0 M
11/27/2016 7:00 AM 0.00 0.0 M 0.0 M
11/28/2016 7:00 AM 0.00 0.0 M 0.0 M
11/29/2016 7:00 AM 0.00 0.0 M 0.0 M a lot of clouds but no precip
11/30/2016 7:00 AM 0.00 0.0 M 0.0 M
12/1/2016 7:00 AM 0.00 0.0 M 0.0 M
12/2/2016 7:00 AM 0.00 0.0 M 0.0 M
12/3/2016 7:00 AM T T M 0.0 M snow flurries or S-- off and on from about 0900 until about 2100
12/4/2016 7:00 AM 0.00 0.0 M 0.0 M
12/5/2016 7:00 AM 0.00 0.0 M 0.0 M
12/6/2016 7:00 AM 0.00 0.0 M 0.0 M
12/7/2016 7:00 AM 0.25 5.0 M 5.0 M Snow decreased and stopped at times overnight, S-- at 0700. 2.0" at 2230 with 0.12".
12/8/2016 7:00 AM T 0.1 M 3.0 M snow flurries off and on during the day, another dusting overnight. Low of -4, was -2 at 2100 but then became cloudy and temp rose. +2 at 0700.
12/9/2016 7:00 AM 0.00 0.0 M 3.0 M
12/10/2016 7:00 AM 0.00 0.0 M 2.5 M
12/11/2016 7:00 AM 0.05 0.5 M 1.0 M
12/12/2016 7:00 AM 0.01 T M T M
12/13/2016 7:00 AM 0.00 0.0 M T M about 0.5" left in the shade, none in the sun
12/14/2016 7:00 AM T T M T M a few flurries seen around 0500 with surge of arctic air. Still a little old snow left in the shade.
12/15/2016 7:00 AM T T M T M some off and on S-- mainly in the morning and SW- afternoon. Old snow left in the shade
12/16/2016 7:00 AM 0.00 0.0 M 0.0 M temp jumped to a high of 65 by afternoon, all snow gone now.
12/17/2016 7:00 AM 0.40 5.3 M 4.5 M 3.0" by 10pm with 0.18 melted, most of the rest fell by midnight (2.3/,22") Snow began with flurries around 615pm, heavier by about 7pm. Rare tiny shower of freezing rain in Boulder (T) around 415pm, not sure if it made it to my house. -2 low and current at 0700, not snowing now.
12/18/2016 7:00 AM 0.00 0.0 M 3.5 M low 0f -13, was -12 at 930pm but fluctuated a lot after that.
12/19/2016 7:00 AM 0.00 0.0 M 3.0 M low of 0.
12/20/2016 7:00 AM 0.00 0.0 M 3.0 M
12/21/2016 7:00 AM 0.00 0.0 M 1.0 M some bare areas in the sun
12/22/2016 7:00 AM 0.00 0.0 M 0.5 M bare areas in the sun, about an inch in the shade
12/23/2016 7:00 AM 0.00 0.0 M 0.5 M still a solid 1-1.5 in the shade, otherwise bare spots
12/24/2016 7:00 AM 0.00 0.0 M T M After a high of 57 friday main snow is left in the shade with a solid inch.
12/25/2016 7:00 AM 0.00 0.0 M T M still an inch of snow in the shade otherwise bare ground. Clouds came in overnight but saw no precip and sunshine at 0700
12/26/2016 7:00 AM T T M T M clouded up but only had ~5 min of S- to S-- around 1000. Still solid inch of snow left in the shade
12/27/2016 7:00 AM 0.00 0.0 M T M
12/28/2016 7:00 AM 0.00 0.0 M T M still around an inch left in the shade
12/29/2016 7:00 AM 0.00 0.0 M T M saw snow flurries (blowover from the mountains) in Boulder but nothing at my house east of town. Still some snow left in the shade.
12/30/2016 7:00 AM 0.00 0.0 M T M about a half inch of snow left in the shade
12/31/2016 7:00 AM 0.00 0.0 M T M
1/1/2017 7:00 AM 0.00 0.0 M T M
1/2/2017 7:00 AM 0.00 0.0 M T M just a little snow left in the shade
1/3/2017 7:00 AM 0.02 0.3 M 0.5 M S-- began by 2100 and pretty much continued all night (still at 0700). At 0430 still only a dusting so increase came after that and before 0700.
1/4/2017 7:00 AM T T M T M almost an additional 0.1 in the morning, off and on S-- much of the last 24h but actual snow depth compacted to ~0.2".
1/5/2017 7:00 AM 0.65 10.0 M 9.0 M melting precip that fell after 2200. S- to S-- in the morning, gradually increased. By 1830 had 2.2"/0.15"/15:1, by 2200 another 2.2"/0.11" (20:1), 5.6" fell after 2200 with 0.39 melted (14:1). Still S- and 3 degrees, no wind (low of 3). Snow to liquid for entire storm = 15:1
1/6/2017 7:00 AM 0.10 1.1 M 7.5 M Low of -12. Most of the snow fell by noon. over by 3pm storm total 11.1 with 0.75" melted
1/7/2017 7:00 AM 0.00 0.0 M 7.0 M
1/8/2017 7:00 AM 0.00 0.0 M 6.0 M estimated snow depth
1/9/2017 7:00 AM 0.00 0.0 M T M
1/10/2017 7:00 AM 0.00 0.0 M 0.0 M
1/11/2017 7:00 AM 0.00 0.0 M 0.0 M
1/12/2017 7:00 AM T 0.1 M T M burst of snow around 5pm
1/13/2017 7:00 AM T 0.2 M T M S- to S-- from about 1530 to ~2000
1/14/2017 7:00 AM 0.00 0.0 M 0.0 M
1/15/2017 7:00 AM 0.00 0.0 M 0.0 M
1/16/2017 7:00 AM 0.28 2.8 M 2.5 M estimate from nearby reports and my 2 day total
1/17/2017 7:00 AM 0.08 0.7 M 3.0 M 2 day total from one measurement at 9pm on 16 Jan of 3.5"/0.36"
1/18/2017 7:00 AM 0.00 0.0 M 3.0 M
1/19/2017 7:00 AM 0.00 0.0 M 2.0 M
1/20/2017 7:00 AM 0.00 0.0 M 1.5 M still 3" in the shade, some bare spots in sunny areas
1/21/2017 7:00 AM 0.00 0.0 M 1.0 M more in the shade
1/22/2017 7:00 AM 0.00 0.0 M 0.5 M
1/23/2017 7:00 AM 0.00 0.0 M T M
1/24/2017 7:00 AM 0.00 0.0 M T M
1/25/2017 7:00 AM 0.01 T M T M based on nearby reports
1/26/2017 7:00 AM 0.00 0.0 M T M
1/27/2017 7:00 AM 0.00 0.0 M T M
1/28/2017 7:00 AM 0.00 0.0 M T M
1/29/2017 7:00 AM 0.00 0.0 M T M about 0.5" of snow left in the shade
1/30/2017 7:00 AM 0.00 0.0 M T M still snow left in the shade
1/31/2017 7:00 AM 0.00 0.0 M T M still areas of snow <0.5 deep in the shade
2/1/2017 7:00 AM 0.00 0.0 M 0.0 M
2/2/2017 7:00 AM 0.04 0.2 M T M 0.2" of glaze ice from freezing drizzle with a dusting of snow. About 0.1"/.02" by 2230, rest overnight with mostly S-- to S- after 0600.
2/3/2017 7:00 AM T T M T M off and on S-- mainly in the morning. Very little melting, still 0.2" of ice and snow around.
2/4/2017 7:00 AM T T M T M some SW- before 1000
2/5/2017 7:00 AM 0.00 0.0 M 0.0 M
2/6/2017 7:00 AM 0.00 0.0 M 0.0 M
2/7/2017 7:00 AM 0.00 0.0 M 0.0 M
2/8/2017 7:00 AM 0.00 0.0 M 0.0 M
2/9/2017 7:00 AM 0.00 0.0 M 0.0 M
2/10/2017 7:00 AM 0.00 0.0 M 0.0 M overnight low of 57
2/11/2017 7:00 AM 0.00 0.0 M 0.0 M high of 76
2/12/2017 7:00 AM T 0.0 M 0.0 M
2/13/2017 7:00 AM 0.00 0.0 M 0.0 M
2/14/2017 7:00 AM 0.00 0.0 M 0.0 M
2/15/2017 7:00 AM 0.00 0.0 M 0.0 M
2/16/2017 7:00 AM 0.00 0.0 M 0.0 M
2/17/2017 7:00 AM 0.00 0.0 M 0.0 M hi of 71
2/18/2017 7:00 AM 0.00 0.0 M 0.0 M
2/19/2017 7:00 AM 0.00 0.0 M 0.0 M
2/20/2017 7:00 AM T 0.0 M 0.0 M off and on light rain showers between ~1800-~1930
2/21/2017 7:00 AM 0.00 0.0 M 0.0 M
2/22/2017 7:00 AM 0.00 0.0 M 0.0 M
2/23/2017 7:00 AM 0.00 0.0 M 0.0 M
2/24/2017 7:00 AM 0.38 6.4 M 5.5 M snow pretty much all day. By 2130 4.2" with 0.35" melted, mostly clear but still S--, then clouded over again and another 2.2" of fluff ending at 0700/only 0.04" of melted. Still S- to S and 17 at 0700.
2/25/2017 7:00 AM 0.01 1.1 M 3.0 M extreme fluff, mostly in the morning. Snow depth took a hit with the limited sun despite the high of only 26
2/26/2017 7:00 AM 0.00 0.0 M 1.0 M
2/27/2017 7:00 AM 0.00 0.0 M T M
2/28/2017 7:00 AM 0.00 0.0 M T M no snow left in the sun, 1-1.5 left in the shade
3/1/2017 7:00 AM 0.00 0.0 M T M still about an inch of snow in the shade. Close to snow showers late afternoon but never saw any falling.
3/2/2017 7:00 AM 0.00 0.0 M T M about an inch of snow left in the shade
3/3/2017 7:00 AM 0.00 0.0 M T M about half an inch of snow left in the shade
3/4/2017 7:00 AM 0.00 0.0 M 0.0 M
3/5/2017 7:00 AM 0.00 0.0 M 0.0 M
3/6/2017 7:00 AM 0.00 0.0 M 0.0 M
3/7/2017 7:00 AM 0.00 0.0 M 0.0 M
3/8/2017 7:00 AM 0.00 0.0 M 0.0 M
3/9/2017 7:00 AM 0.00 0.0 M 0.0 M
3/10/2017 7:00 AM 0.00 0.0 M 0.0 M
3/11/2017 7:00 AM 0.01 0.0 M 0.0 M R-- at 0700 and 37 degrees (also the low). Rain began after 4am
3/12/2017 7:00 AM 0.03 T M 0.0 M A burst of precip around 0730 for about 10 min when the rain increased then changed briefly to mostly snow pellets. After that burst back to R-- that pretty much was over by 0830
3/13/2017 7:00 AM 0.00 0.0 M 0.0 M
3/14/2017 7:00 AM 0.00 0.0 M 0.0 M
3/15/2017 7:00 AM 0.00 0.0 M 0.0 M Hi of 74. Apricot tree in full bloom.
3/16/2017 7:00 AM 0.00 0.0 M 0.0 M
3/17/2017 7:00 AM 0.00 0.0 M 0.0 M hi of 77
3/18/2017 7:00 AM 0.00 0.0 M 0.0 M
3/19/2017 7:00 AM 0.00 0.0 M 0.0 M hi of 81
3/20/2017 7:00 AM 0.00 0.0 M 0.0 M hi of 80
3/21/2017 7:00 AM 0.00 0.0 M 0.0 M
3/22/2017 7:00 AM T 0.0 M 0.0 M some late afternoon sprinkles
3/23/2017 7:00 AM 0.00 0.0 M 0.0 M
3/24/2017 7:00 AM 0.23 0.0 M 0.0 M Rain began by ~2230 and was probably over by 0200. Unfortunately unlike a year ago this one shifted east and we went to downsloping so no snow, but at least some precip.
3/25/2017 7:00 AM 0.00 0.0 M 0.0 M
3/26/2017 7:00 AM 0.00 0.0 M 0.0 M
3/27/2017 7:00 AM 0.04 0.0 M 0.0 M
3/28/2017 7:00 AM 0.16 0.0 M 0.0 M few sprinkles first around 1830, then some R- amounting to .01" by 2230, with rest overnight in some decent showers.
3/29/2017 7:00 AM 0.34 0.0 M 0.0 M 0.31" fell by 1900
3/30/2017 7:00 AM 0.00 0.0 M 0.0 M
3/31/2017 7:00 AM 0.03 0.0 M 0.0 M Some overnight R-
4/1/2017 7:00 AM 0.45 T M 0.0 M precip finally mixed with snow at times by 1600 but then back to furious drizzle until ~2200. S-- overnight at times with some drizzle but only .03" of precip after 2200. Low and current of 32.
4/2/2017 7:00 AM 0.00 0.0 M 0.0 M
4/3/2017 7:00 AM 0.03 0.0 M 0.0 M
4/4/2017 7:00 AM 0.61 5.4 M 5.5 M still melting the snow for liquid. R-- to R- off and on began by ~2130, with a trace by 2300 when it picked up to R- ocnl R with temp of 37. By 0100 all snow (S- to S) with ~0.3" new. At 0700 30 and S-.
4/5/2017 7:00 AM 0.50 4.0 M 5.0 M 0.6" of snow (liquid not known) by 1000, end of "1st storm" with 6.0" total. Snow began again off and on about 4pm, very heavy with giant flakes ~1900-2000, then gradually became S- after 2100 with 3.4" total. Low of 21
4/6/2017 7:00 AM 0.00 0.0 M T M all the snow melted in sunny areas but ~2" left in the shade
4/7/2017 7:00 AM 0.00 0.0 M T M a little snow left in the shade
4/8/2017 7:00 AM 0.00 0.0 M 0.0 M all snow gone after a high of 72
4/9/2017 7:00 AM 0.00 0.0 M 0.0 M
4/10/2017 7:00 AM 0.00 0.0 M 0.0 M
4/11/2017 7:00 AM 0.00 0.0 M 0.0 M
4/12/2017 7:00 AM 0.00 0.0 M 0.0 M
4/13/2017 7:00 AM 0.00 0.0 M 0.0 M
4/14/2017 7:00 AM 0.00 0.0 M 0.0 M
4/15/2017 7:00 AM 0.00 0.0 M 0.0 M
4/16/2017 7:00 AM 0.00 0.0 M 0.0 M
4/17/2017 7:00 AM 0.00 0.0 M 0.0 M
4/18/2017 7:00 AM 0.00 0.0 M 0.0 M
4/19/2017 7:00 AM 0.00 0.0 M 0.0 M
4/20/2017 7:00 AM 0.00 0.0 M 0.0 M
4/21/2017 7:00 AM 0.22 0.0 M 0.0 M low of 39. Showers began mid afternoon. 0.09" by 1830, another .01 by 2300.
4/22/2017 7:00 AM 0.11 0.0 M 0.0 M R- began as sprinkles around noon, picking up by 1500. .05" by 1900, another .02" by 2300, .04" 2300-0700, temp remained in upper 30s overnight
4/23/2017 7:00 AM T 0.0 M 0.0 M some off and on R-- between 0700-~0830
4/24/2017 7:00 AM 0.00 0.0 M 0.0 M
4/25/2017 7:00 AM 0.14 0.0 M 0.0 M Some sprinkles a little R- mid aftn into the evening (T), then period of rain around midnight
4/26/2017 7:00 AM 0.13 T M 0.0 M graupel/wet snow briefly tried to accumulate on the porch around 8pm, then precip over by 9pm. Low of 28 after clearing.
4/27/2017 7:00 AM 0.00 0.0 M 0.0 M
4/28/2017 7:00 AM 0.12 T M 0.0 M some morning sprinkles but main rain ~1200-~1400, a little mixed snow during the heavier precip
4/29/2017 7:00 AM 0.16 3.0 M 3.0 M No rain, snow began early aftn then ended, began again around 1630, by 1130 1.5" with 0.20" melted, another 1.5"/0.16" by 0700. 28 (also low) with S- ocnl S and some fog at 0700, light N wind.
4/30/2017 7:00 AM 0.17 1.7 M 3.0 M snow depth estimated. accumulating snow ended by noon, .01" after 1200. Storm total 4.7"/0.50"
5/1/2017 7:00 AM 0.00 0.0 M 0.0 M
5/2/2017 7:00 AM 0.00 0.0 M 0.0 M
5/3/2017 7:00 AM 0.06 0.0 M 0.0 M one rumble of thunder around 6pm with some rain (.01) then another rumble about midnight, with another period of rain around 0300. R- began again at 0700 and 37 (also low)
5/4/2017 7:00 AM 0.12 T M 0.0 M rain (R-, ocnl R) was mixed with some wet snow at times from ~0800-0930, no accumulation. Temp got down to 37 during that time.
5/5/2017 7:00 AM 0.00 0.0 M 0.0 M
5/6/2017 7:00 AM 0.00 0.0 M 0.0 M
5/7/2017 7:00 AM 0.00 0.0 M 0.0 M warmest so far this year, high of 87
5/8/2017 7:00 AM 0.03 0.0 M 0.0 M tstm ~3-4pm, wind gust estimated 30 mph
5/9/2017 7:00 AM 0.63 0.0 M 0.0 M most fell after dark. No hail.
5/10/2017 7:00 AM 0.03 0.0 M 0.0 M
5/11/2017 7:00 AM 0.26 0.0 M 0.0 M
5/12/2017 7:00 AM 0.00 0.0 M 0.0 M
5/13/2017 7:00 AM 0.00 0.0 M 0.0 M
5/14/2017 7:00 AM 0.00 0.0 M 0.0 M
5/15/2017 7:00 AM T 0.0 M 0.0 M off and on sprinkles about 430-6pm
5/16/2017 7:00 AM 0.00 0.0 M 0.0 M
5/17/2017 7:00 AM 0.10 0.0 M 0.0 M off and on showers/tstms ~2-530pm
5/18/2017 7:00 AM 1.88 T M T M heavy tstm with hail (max size a little over pea) 1900-1945 then just rain, mixed with snow by 0430 (35), more snow than rain after 0600 (but more rain then snow when lighter). Slush covering porch not quite a tenth of an inch. 33.5 at 0700 with S- mixed with some rain.
5/19/2017 7:00 AM 1.98 7.2 M 5.0 M Almost all snow for this 24h period, mixed until ~0730, then S+, S at times generally until 1500. Then became more S-, ocnl S to S+ until 1900, but pretty much done by 2000. Numbers: 1.5" by 0915, anothe 3.0" by 1430 (total precip 0700-1430 1.56", very wet snow with temp around 32); 1430-1700 1.3, then another 1.2 by 2200 (for this 2.5"/0.29" melted). Overnight had 0.2" of snow (around 0400) with 0.13" melted
5/20/2017 7:00 AM T 0.0 M 2.0 M
5/21/2017 7:00 AM 0.00 0.0 M T M
5/22/2017 7:00 AM 0.27 0.0 M 0.0 M
5/23/2017 7:00 AM 0.15 0.0 M 0.0 M showers ~1700-2000
5/24/2017 7:00 AM 0.00 0.0 M 0.0 M
5/25/2017 7:00 AM 0.00 0.0 M 0.0 M Recovery from low of 35 to high of 83
5/26/2017 7:00 AM 0.33 0.0 M 0.0 M brief shower with wind at 1000, aftn showers/tstm dropped .02, .06" with tstm around 2000 with brief R+ and a bit of tiny hail, rest after 2300.
5/27/2017 7:00 AM 0.00 0.0 M 0.0 M
5/28/2017 7:00 AM 0.15 0.0 M 0.0 M off an on showers most of the day, heaviest rain fell in the early to mid afternoon. last sprinkles ended about 1730 with clearing. hi of only 55 then overnight down to 36.
5/29/2017 7:00 AM 0.02 0.0 M 0.0 M Fell after 2300..
5/30/2017 7:00 AM 0.03 0.0 M 0.0 M one tstm around 1330 (.02") and another shower about 1530
5/31/2017 7:00 AM 0.01 0.0 M 0.0 M shower around 930pm
6/1/2017 7:00 AM 0.00 0.0 M 0.0 M
6/2/2017 7:00 AM 0.13 0.0 M 0.0 M a fairly lengthy mid aftn tstm
6/3/2017 7:00 AM 0.04 0.0 M 0.0 M light rain showers just after noon, main shower/tstm around 1530
6/4/2017 7:00 AM 0.00 0.0 M 0.0 M
6/5/2017 7:00 AM 0.00 0.0 M 0.0 M
6/6/2017 7:00 AM 0.03 0.0 M 0.0 M mid aftn tstm
6/7/2017 7:00 AM 0.00 0.0 M 0.0 M lots of clouds but no precip
6/8/2017 7:00 AM T 0.0 M 0.0 M Some thunder but no rain around 1500. Thunder from about 2045 to 2130 with a short period of rain (T).
6/9/2017 7:00 AM 0.00 0.0 M 0.0 M
6/10/2017 7:00 AM 0.00 0.0 M 0.0 M suddenly summer - high of 93
6/11/2017 7:00 AM 0.00 0.0 M 0.0 M
6/12/2017 7:00 AM 0.00 0.0 M 0.0 M
6/13/2017 7:00 AM 0.00 0.0 M 0.0 M
6/14/2017 7:00 AM 0.00 0.0 M 0.0 M
6/15/2017 7:00 AM 0.00 0.0 M 0.0 M
6/16/2017 7:00 AM 0.00 0.0 M 0.0 M
6/17/2017 7:00 AM 0.00 0.0 M 0.0 M
6/18/2017 7:00 AM 0.00 0.0 M 0.0 M
6/19/2017 7:00 AM 0.00 0.0 M 0.0 M
6/20/2017 7:00 AM 0.00 0.0 M 0.0 M
6/21/2017 7:00 AM 0.00 0.0 M 0.0 M
6/22/2017 7:00 AM 0.00 0.0 M 0.0 M
6/23/2017 7:00 AM 0.15 0.0 M 0.0 M
6/24/2017 7:00 AM T 0.0 M 0.0 M
6/25/2017 7:00 AM 0.00 0.0 M 0.0 M
6/26/2017 7:00 AM 0.00 0.0 M 0.0 M
6/27/2017 7:00 AM 0.00 0.0 M 0.0 M
6/28/2017 7:00 AM 0.00 0.0 M 0.0 M
6/29/2017 7:00 AM 0.00 0.0 M 0.0 M
6/30/2017 7:00 AM 0.02 0.0 M 0.0 M One tstm late afternoon dropped .01, another to our ne around 1900-2000 only a trace, then another series of tstms overnight after 10pm (.01)
7/1/2017 7:00 AM 0.00 0.0 M 0.0 M
7/2/2017 7:00 AM 0.00 0.0 M 0.0 M
7/3/2017 7:00 AM T 0.0 M 0.0 M Lots of clouds but only some off and on sprinkles/R- ~2-330pm
7/4/2017 7:00 AM T 0.0 M 0.0 M mid to late aftn showers with more wind than rain
7/5/2017 7:00 AM 0.00 0.0 M 0.0 M
7/6/2017 7:00 AM 0.00 0.0 M 0.0 M
7/7/2017 7:00 AM 0.00 0.0 M 0.0 M
7/8/2017 7:00 AM T 0.0 M 0.0 M mid to late aftn showers around
7/9/2017 7:00 AM 0.00 0.0 M 0.0 M
7/10/2017 7:00 AM 0.00 0.0 M 0.0 M
7/11/2017 7:00 AM T 0.0 M 0.0 M some afternoon sprinkles
7/12/2017 7:00 AM 0.00 0.0 M 0.0 M
7/13/2017 7:00 AM 0.04 0.0 M 0.0 M so many clouds, so little rain...most fell by 1900
7/14/2017 7:00 AM 0.00 0.0 M 0.0 M
7/15/2017 7:00 AM 0.00 0.0 M 0.0 M
7/16/2017 7:00 AM 0.02 0.0 M 0.0 M clouds kept moving in from the east and finally got a period of R- 1700-1730
7/17/2017 7:00 AM 0.00 0.0 M 0.0 M
7/18/2017 7:00 AM 0.00 0.0 M 0.0 M
7/19/2017 7:00 AM 0.00 0.0 M 0.0 M
7/20/2017 7:00 AM 0.00 0.0 M 0.0 M High of 96
7/21/2017 7:00 AM T 0.0 M 0.0 M a few sprinkles around 6 pm and again around 8 pm. Some thunder early to mid aftn without any rain.
7/22/2017 7:00 AM 0.10 0.0 M 0.0 M
7/23/2017 7:00 AM 0.00 0.0 M 0.0 M
7/24/2017 7:00 AM 0.00 0.0 M 0.0 M
7/25/2017 7:00 AM 0.00 0.0 M 0.0 M
7/26/2017 7:00 AM 0.12 0.0 M 0.0 M hours of mainly R-, .05" by 1700, another .07" by 2300
7/27/2017 7:00 AM 0.53 0.0 M 0.0 M Finally some real rain! Heavy shower with some thunder (more after much of the rain was over) ~2000-2200 (most by 2100). Up to this point only 0.65 since 1 June.
7/28/2017 7:00 AM 0.00 0.0 M 0.0 M
7/29/2017 7:00 AM T 0.0 M 0.0 M R- began after 0600
7/30/2017 7:00 AM 0.01 0.0 M 0.0 M barely .01" despite off and on R-- (ocnl R-) all day into evening
7/31/2017 7:00 AM T 0.0 M 0.0 M a few sprinkles around mid aftn
8/1/2017 7:00 AM 0.00 0.0 M 0.0 M
8/2/2017 7:00 AM 0.00 0.0 M 0.0 M
8/3/2017 7:00 AM 0.03 0.0 M 0.0 M An afternoon tstm with a trace, then a tstm around 0200, with some other rain after that.
8/4/2017 7:00 AM 0.01 0.0 M 0.0 M light showers in the afternoon. Considerable thunder, some about a mile away, ~0300-~0400 but no rain here.
8/5/2017 7:00 AM 0.05 0.0 M 0.0 M An early evening storm
8/6/2017 7:00 AM 0.07 0.0 M 0.0 M a mid aftn shower with some wind (T), then tstm ~1930-2030
8/7/2017 7:00 AM 0.19 0.0 M 0.0 M
8/8/2017 7:00 AM 0.70 0.0 M 0.0 M
8/9/2017 7:00 AM 0.05 0.0 M 0.0 M
8/10/2017 7:00 AM 0.02 0.0 M 0.0 M
8/11/2017 7:00 AM 0.06 0.0 M 0.0 M
8/12/2017 7:00 AM 0.00 0.0 M 0.0 M
8/13/2017 7:00 AM T 0.0 M 0.0 M Brief mid aftn sprinkles but a longer period of thunder with storm to our south.
8/14/2017 7:00 AM T 0.0 M 0.0 M another mid aftn sprinkle followed by about 45 min of thunder with a storm to the southeast
8/15/2017 7:00 AM T 0.0 M 0.0 M another trace with some late afternoon sprinkles
8/16/2017 7:00 AM 0.01 0.0 M 0.0 M Off and on R-- to R- ~1330-1430 (T), then tstm from ~1830 - ~1945 but missed most of the rain
8/17/2017 7:00 AM 0.04 0.0 M 0.0 M mid afternoon tstm with some other showers
8/18/2017 7:00 AM T 0.0 M 0.0 M
8/19/2017 7:00 AM 0.00 0.0 M 0.0 M no precip breaks a long streak of trace or better lately
8/20/2017 7:00 AM 0.02 0.0 M 0.0 M .02" in shower around 1730, then off and on sprinkles, mostly R-, with last one at 2215.
8/21/2017 7:00 AM 0.00 0.0 M 0.0 M
8/22/2017 7:00 AM 0.00 0.0 M 0.0 M
8/23/2017 7:00 AM 0.00 0.0 M 0.0 M some thunder ~2000-2045 with storm to the west
8/24/2017 7:00 AM T 0.0 M 0.0 M A shower with some thunder and some wind (more wind in Boulder) ~1800-1845
8/25/2017 7:00 AM T 0.0 M 0.0 M This time some light showers more mid afternoon with some wind.
8/26/2017 7:00 AM 0.00 0.0 M 0.0 M
8/27/2017 7:00 AM T 0.0 M 0.0 M a very few sprinkles around 1130 then more sprinkles mid afternoon
8/28/2017 7:00 AM T 0.0 M 0.0 M Off and on sprinkles around 0800 then clouds decreased after 0900
8/29/2017 7:00 AM 0.00 0.0 M 0.0 M
8/30/2017 7:00 AM 0.00 0.0 M 0.0 M
8/31/2017 7:00 AM 0.00 0.0 M 0.0 M May have been a trace around 1830 but not home to see it (saw precip a mile away)
9/1/2017 7:00 AM 0.01 0.0 M 0.0 M Shower with almost .01 mid to late aftn, then short period of R- around 2300
9/2/2017 7:00 AM 0.00 0.0 M 0.0 M
9/3/2017 7:00 AM 0.00 0.0 M 0.0 M
9/4/2017 7:00 AM 0.00 0.0 M 0.0 M
9/5/2017 7:00 AM 0.00 0.0 M 0.0 M
9/6/2017 7:00 AM 0.00 0.0 M 0.0 M
9/7/2017 7:00 AM 0.00 0.0 M 0.0 M
9/8/2017 7:00 AM 0.00 0.0 M 0.0 M
9/9/2017 7:00 AM 0.00 0.0 M 0.0 M
9/10/2017 7:00 AM 0.00 0.0 M 0.0 M
9/11/2017 7:00 AM 0.00 0.0 M 0.0 M Lots of clouds and some wind gusts late afternoon but no sprinkles
9/12/2017 7:00 AM 0.00 0.0 M 0.0 M Plenty of time it looked like it would rain, but nothing.
9/13/2017 7:00 AM 0.00 0.0 M 0.0 M
9/14/2017 7:00 AM T 0.0 M 0.0 M a brief tstm around 1230
9/15/2017 7:00 AM 0.00 0.0 M 0.0 M
9/16/2017 7:00 AM T 0.0 M 0.0 M trace of rain but lots of wind with a microburst ~1845. then lots of thunder but only a trace of rain 2130-2230
9/17/2017 7:00 AM 0.01 0.0 M 0.0 M off and on R- to R-- mainly 0700 to 1000 barely making .01
9/18/2017 7:00 AM 0.00 0.0 M 0.0 M
9/19/2017 7:00 AM 0.00 0.0 M 0.0 M
9/20/2017 7:00 AM 0.00 0.0 M 0.0 M
9/21/2017 7:00 AM 0.00 0.0 M 0.0 M
9/22/2017 7:00 AM 0.00 0.0 M 0.0 M
9/23/2017 7:00 AM 0.01 0.0 M 0.0 M early evening shower
9/26/2017 7:00 AM 0.02 0.0 M 0.0 M
9/27/2017 7:00 AM 0.02 0.0 M 0.0 M evening into nighttime R-
9/28/2017 7:00 AM 0.32 0.0 M 0.0 M .02" during the day through 2300, rest overnight. R-- at 0700.
9/29/2017 7:00 AM 0.03 0.0 M 0.0 M .02" 0700-0800, some off and on R-- during the day, then off and on R- to R-- ~2000 until after midnight.
9/30/2017 7:00 AM 0.06 0.0 M 0.0 M some sprinkles around 1800 then tstm around 2030



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/24/2017 9/25/2017 7:00 AM 2 0.96 0.0 M



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