Viewing Station: CA-SM-6 : Foster City 1.3 SW
Nov 10, 2008 - Dec 22, 20256,266 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.64"
December 1-22, 2025(22 of 22 days covered by obs)
NOAA Normal
2.65"
Departure from Normal
-2.01" : 24% of Normal
Year-To-Date: 12.82"
Jan 1 to Dec 22, 2025(356 of 356 days covered by obs)
NOAA Normal
17.76"
Departure from Normal
-4.94" : 72% of Normal
Water Year-To-Date: 5.38"
Oct 1, 2025 to Dec 22, 2025(83 of 83 days covered by obs)
NOAA Normal
5.35"
Departure from Normal
0.03" : 100% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.68
3.59
0.09
Feb
3.70
3.58
0.12
Mar
2.79
2.62
0.17
Apr
1.34
1.35
-0.01
May
0.63
0.52
0.11
Jun
0.15
0.16
-0.01
Jul
0.01
0.01
0.00
Aug
0.03
0.04
-0.01
Sep
0.08
0.08
0.00
Oct
0.88
0.77
0.11
Nov
1.82
1.72
0.10
Dec
3.74
3.75
-0.01
18.85
18.19
0.66