Viewing Station: CA-SM-52 : Foster City 2.0 SSW
Nov 22, 2025 - Sep 21, 2026269 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.04"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
0.06"
Departure from Normal
-0.02" : 68% of Normal
Year-To-Date: 10.00"
Jan 1 to Sep 22, 2026(263 of 265 days covered by obs)
NOAA Normal
12.96"
Departure from Normal
-2.96" : 77% of Normal
Water Year-To-Date: 12.28"
Oct 1, 2025 to Sep 22, 2026(303 of 357 days covered by obs)
NOAA Normal
19.62"
Departure from Normal
-7.34" : 63% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.91
3.62
0.29
Feb
3.84
3.61
0.23
Mar
2.97
2.61
0.36
Apr
1.39
1.35
0.04
May
0.61
0.52
0.09
Jun
0.14
0.16
-0.02
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
1.91
1.73
0.18
Dec
3.87
3.74
0.13
19.64
18.24
1.40