Viewing Station: IL-WL-42 : Mokena 1.3 W
Apr 7, 2008 - Dec 16, 20253,008 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.52"
December 1-17, 2025(15 of 17 days covered by obs)
NOAA Normal
1.20"
Departure from Normal
-0.68" : 43% of Normal
Year-To-Date: 38.73"
Jan 1 to Dec 17, 2025(347 of 351 days covered by obs)
NOAA Normal
38.23"
Departure from Normal
0.50" : 101% of Normal
Water Year-To-Date: 5.22"
Oct 1, 2025 to Dec 17, 2025(75 of 78 days covered by obs)
NOAA Normal
7.25"
Departure from Normal
-2.03" : 72% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.14
2.15
-0.01
Feb
1.89
1.96
-0.07
Mar
2.42
2.35
0.07
Apr
3.81
3.80
0.01
May
4.56
4.61
-0.05
Jun
4.49
4.43
0.06
Jul
4.23
4.34
-0.11
Aug
4.03
3.98
0.05
Sep
3.41
3.35
0.06
Oct
3.40
3.38
0.02
Nov
2.65
2.61
0.04
Dec
2.19
2.17
0.02
39.22
39.13
0.09