Viewing Station: IL-DP-189 : Downers Grove 1.8 SSE
Aug 15, 2023 - Dec 15, 2025895 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.78"
December 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.05"
Departure from Normal
-0.27" : 74% of Normal
Year-To-Date: 38.55"
Jan 1 to Dec 15, 2025(349 of 349 days covered by obs)
NOAA Normal
37.64"
Departure from Normal
0.91" : 102% of Normal
Water Year-To-Date: 5.54"
Oct 1, 2025 to Dec 15, 2025(76 of 76 days covered by obs)
NOAA Normal
7.20"
Departure from Normal
-1.66" : 77% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.15
-0.13
Feb
1.83
1.99
-0.16
Mar
2.41
2.36
0.05
Apr
3.88
3.92
-0.04
May
4.58
4.71
-0.13
Jun
4.44
4.45
-0.01
Jul
3.85
3.91
-0.06
Aug
4.14
4.04
0.10
Sep
3.29
3.25
0.04
Oct
3.54
3.55
-0.01
Nov
2.61
2.65
-0.04
Dec
2.17
2.22
-0.05
38.76
39.20
-0.44