Viewing Station: CO-BO-286 : Boulder 3.5 S
May 3, 2010 - Dec 28, 20255,733 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.90"
December 1-28, 2025(28 of 28 days covered by obs)
NOAA Normal
0.64"
Departure from Normal
0.26" : 140% of Normal
Year-To-Date: 20.05"
Jan 1 to Dec 28, 2025(361 of 362 days covered by obs)
NOAA Normal
19.03"
Departure from Normal
1.02" : 105% of Normal
Water Year-To-Date: 1.62"
Oct 1, 2025 to Dec 28, 2025(89 of 89 days covered by obs)
NOAA Normal
3.07"
Departure from Normal
-1.45" : 53% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.71
0.76
-0.05
Feb
0.91
0.93
-0.02
Mar
1.84
1.89
-0.05
Apr
2.72
2.93
-0.21
May
2.80
3.18
-0.38
Jun
1.88
1.87
0.01
Jul
1.84
1.81
0.03
Aug
1.73
1.67
0.06
Sep
1.53
2.06
-0.53
Oct
1.37
1.54
-0.17
Nov
1.06
1.07
-0.01
Dec
0.71
0.75
-0.04
19.10
20.46
-1.36