Viewing Station: CO-JF-457 : Arvada 3.5 WNW
Sep 1, 2016 - Sep 14, 20253,302 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.23"
September 1-18, 2025(14 of 18 days covered by obs)
NOAA Normal
0.84"
Departure from Normal
-0.61" : 27% of Normal
Year-To-Date: 14.68"
Jan 1 to Sep 18, 2025(257 of 261 days covered by obs)
NOAA Normal
14.00"
Departure from Normal
0.68" : 105% of Normal
Water Year-To-Date: 17.67"
Oct 1, 2024 to Sep 18, 2025(349 of 353 days covered by obs)
NOAA Normal
16.70"
Departure from Normal
0.97" : 106% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.63
0.56
0.07
Feb
0.77
0.70
0.07
Mar
1.50
1.36
0.14
Apr
2.33
2.28
0.05
May
2.61
2.46
0.15
Jun
1.80
1.68
0.12
Jul
1.85
1.68
0.17
Aug
1.67
1.64
0.03
Sep
1.40
1.39
0.01
Oct
1.20
1.18
0.02
Nov
0.93
0.92
0.01
Dec
0.57
0.62
-0.05
17.26
16.47
0.79