Viewing Station: CA-CC-31 : Walnut Creek 2.3 WSW
Sep 1, 2014 - May 22, 20253,870 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.26"
May 1-22, 2025(22 of 22 days covered by obs)
NOAA Normal
0.43"
Departure from Normal
-0.17" : 60% of Normal
Year-To-Date: 11.33"
Jan 1 to May 22, 2025(141 of 142 days covered by obs)
NOAA Normal
12.43"
Departure from Normal
-1.10" : 91% of Normal
Water Year-To-Date: 20.37"
Oct 1, 2024 to May 22, 2025(233 of 234 days covered by obs)
NOAA Normal
19.16"
Departure from Normal
1.21" : 106% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.96
4.84
-0.88
Feb
3.74
4.75
-1.01
Mar
2.94
3.43
-0.49
Apr
1.36
1.63
-0.27
May
0.61
0.81
-0.20
Jun
0.11
0.18
-0.07
Jul
0.00
0.01
-0.01
Aug
0.02
0.04
-0.02
Sep
0.08
0.08
0.00
Oct
0.90
1.11
-0.21
Nov
1.89
2.42
-0.53
Dec
3.94
4.86
-0.92
19.55
24.16
-4.61