Viewing Station: CA-SF-17 : San Francisco 1.6 SE
Oct 9, 1998 - Dec 22, 20251,936 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.05"
December 1-22, 2025(21 of 22 days covered by obs)
NOAA Normal
3.52"
Departure from Normal
-1.47" : 58% of Normal
Year-To-Date: 16.40"
Jan 1 to Dec 22, 2025(355 of 356 days covered by obs)
NOAA Normal
22.38"
Departure from Normal
-5.98" : 73% of Normal
Water Year-To-Date: 5.91"
Oct 1, 2025 to Dec 22, 2025(82 of 83 days covered by obs)
NOAA Normal
7.21"
Departure from Normal
-1.30" : 82% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
4.53
3.97
0.56
Feb
4.56
4.33
0.23
Mar
3.39
2.99
0.40
Apr
1.61
1.24
0.37
May
0.74
0.70
0.04
Jun
0.18
0.20
-0.02
Jul
0.01
0.02
-0.01
Aug
0.05
0.05
0.00
Sep
0.10
0.10
0.00
Oct
1.07
0.89
0.18
Nov
2.62
2.35
0.27
Dec
4.96
5.07
-0.11
23.82
21.91
1.91