Viewing Station: CO-BO-391 : Boulder 2.2 W
Oct 7, 2014 - Sep 8, 20262,774 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.63"
September 1-9, 2026(3 of 9 days covered by obs)
NOAA Normal
0.46"
Departure from Normal
0.17" : 136% of Normal
Year-To-Date: 6.29"
Jan 1 to Sep 9, 2026(110 of 252 days covered by obs)
NOAA Normal
14.17"
Departure from Normal
-7.88" : 44% of Normal
Water Year-To-Date: 7.71"
Oct 1, 2025 to Sep 9, 2026(147 of 344 days covered by obs)
NOAA Normal
16.84"
Departure from Normal
-9.13" : 46% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.58
0.76
-0.18
Feb
0.78
1.01
-0.23
Mar
1.60
1.89
-0.29
Apr
2.45
2.85
-0.40
May
2.69
3.30
-0.61
Jun
1.87
2.19
-0.32
Jul
1.95
1.72
0.23
Aug
1.79
1.64
0.15
Sep
1.54
2.11
-0.57
Oct
1.22
1.65
-0.43
Nov
0.88
1.09
-0.21
Dec
0.57
0.80
-0.23
17.92
21.01
-3.09