Viewing Station: CO-JF-327 : Arvada 1.1 NW
Jul 28, 2009 - Sep 15, 20252,910 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.23"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
0.67"
Departure from Normal
-0.44" : 34% of Normal
Year-To-Date: 10.60"
Jan 1 to Sep 15, 2025(233 of 258 days covered by obs)
NOAA Normal
13.73"
Departure from Normal
-3.13" : 77% of Normal
Water Year-To-Date: 11.58"
Oct 1, 2024 to Sep 15, 2025(316 of 350 days covered by obs)
NOAA Normal
16.39"
Departure from Normal
-4.81" : 71% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.61
0.52
0.09
Feb
0.80
0.65
0.15
Mar
1.43
1.19
0.24
Apr
2.28
2.17
0.11
May
2.67
2.40
0.27
Jun
1.78
1.78
0.00
Jul
1.89
1.69
0.20
Aug
1.60
1.62
-0.02
Sep
1.34
1.31
0.03
Oct
1.16
1.09
0.07
Nov
0.95
0.82
0.13
Dec
0.55
0.54
0.01
17.06
15.78
1.28