Viewing Station: IL-MA-34 : Illiopolis 4.4 NNE
Apr 10, 2022 - Dec 15, 20251,333 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.86"
December 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.10"
Departure from Normal
-0.24" : 78% of Normal
Year-To-Date: 27.74"
Jan 1 to Dec 15, 2025(349 of 349 days covered by obs)
NOAA Normal
37.68"
Departure from Normal
-9.94" : 74% of Normal
Water Year-To-Date: 4.38"
Oct 1, 2025 to Dec 15, 2025(76 of 76 days covered by obs)
NOAA Normal
7.39"
Departure from Normal
-3.01" : 59% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.22
2.19
0.03
Feb
2.01
2.02
-0.01
Mar
2.75
2.70
0.05
Apr
4.07
4.03
0.04
May
4.51
4.48
0.03
Jun
4.33
4.41
-0.08
Jul
4.00
3.98
0.02
Aug
3.37
3.26
0.11
Sep
3.03
3.04
-0.01
Oct
3.27
3.27
0.00
Nov
3.02
2.94
0.08
Dec
2.27
2.24
0.03
38.85
38.56
0.29