Viewing Station: CO-BO-30 : Boulder 1.9 SE
Jul 27, 2001 - Dec 26, 20258,909 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.67"
December 1-30, 2025(26 of 30 days covered by obs)
NOAA Normal
0.64"
Departure from Normal
0.03" : 105% of Normal
Year-To-Date: 18.42"
Jan 1 to Dec 30, 2025(360 of 364 days covered by obs)
NOAA Normal
18.15"
Departure from Normal
0.27" : 101% of Normal
Water Year-To-Date: 1.31"
Oct 1, 2025 to Dec 30, 2025(87 of 91 days covered by obs)
NOAA Normal
2.99"
Departure from Normal
-1.68" : 44% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.66
0.70
-0.04
Feb
0.81
0.81
0.00
Mar
1.72
1.75
-0.03
Apr
2.56
2.66
-0.10
May
2.74
2.95
-0.21
Jun
1.80
1.83
-0.03
Jul
1.73
1.75
-0.02
Aug
1.70
1.54
0.16
Sep
1.44
2.06
-0.62
Oct
1.32
1.48
-0.16
Nov
1.03
1.01
0.02
Dec
0.66
0.69
-0.03
18.17
19.23
-1.06