Viewing Station: CA-MR-9 : Petaluma 10.1 W
Mar 14, 2009 - May 10, 20255,828 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 0.00"
May 1-11, 2025(10 of 11 days covered by obs)
NOAA Normal
0.42"
Departure from Normal
-0.42" : 0% of Normal
Year-To-Date: 13.92"
Jan 1 to May 11, 2025(123 of 131 days covered by obs)
NOAA Normal
20.16"
Departure from Normal
-6.24" : 69% of Normal
Water Year-To-Date: 34.84"
Oct 1, 2024 to May 11, 2025(215 of 223 days covered by obs)
NOAA Normal
32.70"
Departure from Normal
2.14" : 107% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
6.46
6.38
0.08
Feb
6.42
6.25
0.17
Mar
4.59
4.36
0.23
Apr
2.27
2.14
0.13
May
1.17
1.13
0.04
Jun
0.29
0.29
0.00
Jul
0.01
0.01
0.00
Aug
0.05
0.05
0.00
Sep
0.14
0.11
0.03
Oct
1.64
1.45
0.19
Nov
3.76
3.30
0.46
Dec
7.14
6.46
0.68
33.94
31.93
2.01