Viewing Station: CO-BO-380 : Boulder 2.0 W
May 31, 2014 - Dec 20, 20252,481 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.54"
December 1-21, 2025(20 of 21 days covered by obs)
NOAA Normal
0.44"
Departure from Normal
0.10" : 123% of Normal
Year-To-Date: 15.63"
Jan 1 to Dec 21, 2025(354 of 355 days covered by obs)
NOAA Normal
18.19"
Departure from Normal
-2.56" : 86% of Normal
Water Year-To-Date: 1.19"
Oct 1, 2025 to Dec 21, 2025(81 of 82 days covered by obs)
NOAA Normal
2.80"
Departure from Normal
-1.61" : 42% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.65
0.74
-0.09
Feb
0.85
0.98
-0.13
Mar
1.74
1.87
-0.13
Apr
2.56
2.82
-0.26
May
2.76
3.24
-0.48
Jun
1.86
2.13
-0.27
Jul
1.77
1.71
0.06
Aug
1.67
1.62
0.05
Sep
1.53
2.08
-0.55
Oct
1.36
1.61
-0.25
Nov
1.00
1.07
-0.07
Dec
0.65
0.78
-0.13
18.40
20.65
-2.25