Viewing Station: CA-SN-62 : Petaluma 1.3 SW
Feb 26, 2009 - Dec 22, 20254,358 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.88"
December 1-22, 2025(22 of 22 days covered by obs)
NOAA Normal
4.33"
Departure from Normal
-2.45" : 43% of Normal
Year-To-Date: 18.22"
Jan 1 to Dec 22, 2025(356 of 356 days covered by obs)
NOAA Normal
28.16"
Departure from Normal
-9.94" : 65% of Normal
Water Year-To-Date: 6.61"
Oct 1, 2025 to Dec 22, 2025(83 of 83 days covered by obs)
NOAA Normal
9.06"
Departure from Normal
-2.45" : 73% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
5.77
6.14
-0.37
Feb
5.84
6.28
-0.44
Mar
4.12
3.61
0.51
Apr
1.91
1.91
0.00
May
1.06
0.99
0.07
Jun
0.24
0.27
-0.03
Jul
0.01
0.00
0.01
Aug
0.04
0.04
0.00
Sep
0.11
0.08
0.03
Oct
1.48
1.26
0.22
Nov
3.25
2.61
0.64
Dec
6.10
6.15
-0.05
29.93
29.34
0.59