Viewing Station: CO-BO-521 : Boulder 1.4 W
Dec 30, 2019 - Sep 4, 20251,801 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.00"
September 1-8, 2025(4 of 8 days covered by obs)
NOAA Normal
0.41"
Departure from Normal
-0.41" : 0% of Normal
Year-To-Date: 12.08"
Jan 1 to Sep 8, 2025(200 of 251 days covered by obs)
NOAA Normal
14.27"
Departure from Normal
-2.19" : 85% of Normal
Water Year-To-Date: 16.22"
Oct 1, 2024 to Sep 8, 2025(286 of 343 days covered by obs)
NOAA Normal
17.28"
Departure from Normal
-1.06" : 94% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.65
0.66
-0.01
Feb
0.85
0.85
0.00
Mar
1.74
1.78
-0.04
Apr
2.56
2.68
-0.12
May
2.76
2.99
-0.23
Jun
1.86
1.96
-0.10
Jul
1.77
1.67
0.10
Aug
1.67
1.56
0.11
Sep
1.53
2.03
-0.50
Oct
1.36
1.52
-0.16
Nov
1.00
0.97
0.03
Dec
0.65
0.70
-0.05
18.40
19.37
-0.97