Viewing Station: CO-BO-67 : Boulder 4.7 E
Oct 23, 2002 - Sep 22, 20267,956 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.24"
September 1-22, 2026(22 of 22 days covered by obs)
NOAA Normal
1.05"
Departure from Normal
-0.81" : 23% of Normal
Year-To-Date: 7.47"
Jan 1 to Sep 22, 2026(265 of 265 days covered by obs)
NOAA Normal
14.79"
Departure from Normal
-7.32" : 51% of Normal
Water Year-To-Date: 8.80"
Oct 1, 2025 to Sep 22, 2026(357 of 357 days covered by obs)
NOAA Normal
17.76"
Departure from Normal
-8.96" : 50% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.65
0.63
0.02
Feb
0.81
0.73
0.08
Mar
1.69
1.58
0.11
Apr
2.52
2.38
0.14
May
2.77
2.70
0.07
Jun
1.84
1.60
0.24
Jul
1.74
1.61
0.13
Aug
1.72
1.44
0.28
Sep
1.43
1.76
-0.33
Oct
1.33
1.38
-0.05
Nov
1.01
0.92
0.09
Dec
0.63
0.63
0.00
18.14
17.36
0.78