Viewing Station: ceda002 : St. Helena 4.1 SW
Jul 24, 2006 - Sep 15, 20256,676 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.42"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.46"
Departure from Normal
-1.04" : 29% of Normal
Year-To-Date: 23.69"
Jan 1 to Sep 15, 2025(258 of 258 days covered by obs)
NOAA Normal
22.21"
Departure from Normal
1.47" : 107% of Normal
Water Year-To-Date: 27.38"
Oct 1, 2024 to Sep 15, 2025(350 of 350 days covered by obs)
NOAA Normal
26.79"
Departure from Normal
0.59" : 102% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.60
0.57
0.03
Feb
0.83
0.79
0.04
Mar
1.54
1.49
0.05
Apr
3.21
3.13
0.08
May
3.87
3.89
-0.02
Jun
4.18
4.20
-0.02
Jul
3.26
3.19
0.07
Aug
3.26
3.24
0.02
Sep
2.93
2.87
0.06
Oct
2.47
2.48
-0.01
Nov
1.24
1.19
0.05
Dec
0.87
0.82
0.05
28.26
27.86
0.40