Viewing Station: PA-CH-9 : West Chester 2.4 SSE
Jan 14, 2009 - Oct 18, 20255,671 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.76"
October 1-18, 2025(18 of 18 days covered by obs)
NOAA Normal
2.43"
Departure from Normal
-1.67" : 31% of Normal
Year-To-Date: 33.34"
Jan 1 to Oct 18, 2025(288 of 291 days covered by obs)
NOAA Normal
38.45"
Departure from Normal
-5.11" : 87% of Normal
Water Year-To-Date: 0.76"
Oct 1, 2025 to Oct 18, 2025(18 of 18 days covered by obs)
NOAA Normal
2.43"
Departure from Normal
-1.67" : 31% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.44
3.57
-0.13
Feb
2.79
2.88
-0.09
Mar
4.22
4.33
-0.11
Apr
3.68
3.69
-0.01
May
3.75
3.87
-0.12
Jun
4.28
4.38
-0.10
Jul
4.60
4.62
-0.02
Aug
4.37
4.60
-0.23
Sep
4.89
4.99
-0.10
Oct
4.19
4.36
-0.17
Nov
3.32
3.30
0.02
Dec
4.19
4.39
-0.20
47.72
48.98
-1.26