Viewing Station: CO-BO-565 : Boulder 4.5 ESE
Mar 22, 2022 - Sep 15, 2025948 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.48"
September 1-15, 2025(14 of 15 days covered by obs)
NOAA Normal
0.71"
Departure from Normal
-0.23" : 68% of Normal
Year-To-Date: 11.07"
Jan 1 to Sep 15, 2025(202 of 258 days covered by obs)
NOAA Normal
14.03"
Departure from Normal
-2.96" : 79% of Normal
Water Year-To-Date: 11.29"
Oct 1, 2024 to Sep 15, 2025(261 of 350 days covered by obs)
NOAA Normal
16.84"
Departure from Normal
-5.55" : 67% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.61
0.63
-0.02
Feb
0.75
0.74
0.01
Mar
1.61
1.58
0.03
Apr
2.43
2.39
0.04
May
2.72
2.72
0.00
Jun
1.82
1.60
0.22
Jul
1.70
1.61
0.09
Aug
1.68
1.45
0.23
Sep
1.42
1.75
-0.33
Oct
1.28
1.39
-0.11
Nov
0.94
0.93
0.01
Dec
0.59
0.63
-0.04
17.55
17.42
0.13