Viewing Station: CA-SN-99 : Guerneville 2.0 SSW
Jan 1, 2013 - Dec 22, 20252,422 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 7.41"
December 1-22, 2025(6 of 22 days covered by obs)
NOAA Normal
7.28"
Departure from Normal
0.13" : 102% of Normal
Year-To-Date: 42.76"
Jan 1 to Dec 22, 2025(136 of 356 days covered by obs)
NOAA Normal
46.15"
Departure from Normal
-3.39" : 93% of Normal
Water Year-To-Date: 16.33"
Oct 1, 2025 to Dec 22, 2025(39 of 83 days covered by obs)
NOAA Normal
14.70"
Departure from Normal
1.63" : 111% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
9.71
9.30
0.41
Feb
9.50
9.79
-0.29
Mar
6.59
6.43
0.16
Apr
3.48
3.02
0.46
May
1.51
1.69
-0.18
Jun
0.42
0.39
0.03
Jul
0.02
0.02
0.00
Aug
0.05
0.09
-0.04
Sep
0.17
0.17
0.00
Oct
2.10
2.09
0.01
Nov
5.32
4.93
0.39
Dec
10.26
10.26
0.00
49.13
48.18
0.95