Viewing Station: CA-SN-174 : Petaluma 1.4 S
Nov 8, 2021 - Sep 15, 20251,317 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 0.07"
September 1-16, 2025(15 of 16 days covered by obs)
NOAA Normal
0.06"
Departure from Normal
0.01" : 119% of Normal
Year-To-Date: 12.38"
Jan 1 to Sep 16, 2025(258 of 259 days covered by obs)
NOAA Normal
19.05"
Departure from Normal
-6.67" : 65% of Normal
Water Year-To-Date: 28.60"
Oct 1, 2024 to Sep 16, 2025(349 of 351 days covered by obs)
NOAA Normal
29.88"
Departure from Normal
-1.28" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
5.77
6.23
-0.46
Feb
5.84
6.29
-0.45
Mar
4.12
3.71
0.41
Apr
1.91
1.93
-0.02
May
1.06
1.00
0.06
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
1.29
0.19
Nov
3.25
2.69
0.56
Dec
6.10
6.24
-0.14
29.93
29.77
0.16