Viewing Station: IL-WS-1 : Ashley 1.4 NNE
Aug 17, 2010 - Dec 14, 20254,844 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.46"
December 1-15, 2025(14 of 15 days covered by obs)
NOAA Normal
1.43"
Departure from Normal
-0.97" : 32% of Normal
Year-To-Date: 41.73"
Jan 1 to Dec 15, 2025(344 of 349 days covered by obs)
NOAA Normal
43.18"
Departure from Normal
-1.45" : 97% of Normal
Water Year-To-Date: 8.01"
Oct 1, 2025 to Dec 15, 2025(75 of 76 days covered by obs)
NOAA Normal
8.70"
Departure from Normal
-0.69" : 92% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.94
2.83
0.11
Feb
2.47
2.47
0.00
Mar
3.80
3.61
0.19
Apr
4.86
4.80
0.06
May
5.12
5.00
0.12
Jun
4.67
4.74
-0.07
Jul
3.91
3.93
-0.02
Aug
3.36
3.16
0.20
Sep
3.35
3.35
0.00
Oct
3.33
3.27
0.06
Nov
3.94
3.78
0.16
Dec
2.96
2.88
0.08
44.71
43.82
0.89