Viewing Station: IL-LG-15 : Chestnut 1.9 W
Mar 20, 2008 - Dec 22, 20255,197 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.04"
December 1-22, 2025(20 of 22 days covered by obs)
NOAA Normal
1.60"
Departure from Normal
-0.56" : 65% of Normal
Year-To-Date: 23.80"
Jan 1 to Dec 22, 2025(326 of 356 days covered by obs)
NOAA Normal
38.00"
Departure from Normal
-14.20" : 63% of Normal
Water Year-To-Date: 2.04"
Oct 1, 2025 to Dec 22, 2025(65 of 83 days covered by obs)
NOAA Normal
7.86"
Departure from Normal
-5.82" : 26% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.19
2.17
0.02
Feb
1.98
2.04
-0.06
Mar
2.75
2.70
0.05
Apr
3.92
3.93
-0.01
May
4.47
4.36
0.11
Jun
4.28
4.30
-0.02
Jul
4.08
4.21
-0.13
Aug
3.36
3.31
0.05
Sep
3.11
2.98
0.13
Oct
3.28
3.29
-0.01
Nov
2.98
2.86
0.12
Dec
2.26
2.23
0.03
38.66
38.38
0.28