Viewing Station: IL-CK-359 : Chicago 5.5 NNW
Apr 10, 2021 - Jul 31, 20251,446 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.00"
August 1-2, 2025(0 of 2 days covered by obs)
NOAA Normal
0.25"
Departure from Normal
-0.25" : 0% of Normal
Year-To-Date: 18.77"
Jan 1 to Aug 2, 2025(212 of 214 days covered by obs)
NOAA Normal
22.50"
Departure from Normal
-3.73" : 83% of Normal
Water Year-To-Date: 25.49"
Oct 1, 2024 to Aug 2, 2025(304 of 306 days covered by obs)
NOAA Normal
30.50"
Departure from Normal
-5.01" : 84% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.99
2.18
-0.19
Feb
1.83
2.07
-0.24
Mar
2.25
2.26
-0.01
Apr
3.75
3.79
-0.04
May
4.46
4.57
-0.11
Jun
4.28
4.43
-0.15
Jul
3.69
3.77
-0.08
Aug
3.86
3.90
-0.04
Sep
3.29
3.29
0.00
Oct
3.40
3.67
-0.27
Nov
2.50
2.65
-0.15
Dec
2.10
2.30
-0.20
37.40
38.88
-1.48