Viewing Station: CO-BO-30 : Boulder 1.9 SE
Jul 27, 2001 - Sep 29, 20269,182 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.58"
September 1-30, 2026(29 of 30 days covered by obs)
NOAA Normal
1.44"
Departure from Normal
-0.86" : 40% of Normal
Year-To-Date: 8.78"
Jan 1 to Sep 30, 2026(268 of 273 days covered by obs)
NOAA Normal
15.16"
Departure from Normal
-6.38" : 58% of Normal
Water Year-To-Date: 10.19"
Oct 1, 2025 to Sep 30, 2026(360 of 365 days covered by obs)
NOAA Normal
18.17"
Departure from Normal
-7.98" : 56% 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