Viewing Station: IL-CK-296 : Chicago Heights 2.4 NNW
Jul 28, 2017 - Jul 20, 20262,951 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.27"
July 1-21, 2026(20 of 21 days covered by obs)
NOAA Normal
2.81"
Departure from Normal
1.46" : 152% of Normal
Year-To-Date: 32.34"
Jan 1 to Jul 21, 2026(201 of 202 days covered by obs)
NOAA Normal
21.86"
Departure from Normal
10.48" : 148% of Normal
Water Year-To-Date: 41.13"
Oct 1, 2025 to Jul 21, 2026(293 of 294 days covered by obs)
NOAA Normal
30.14"
Departure from Normal
10.99" : 136% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.22
2.26
-0.04
Feb
1.93
2.02
-0.09
Mar
2.39
2.43
-0.04
Apr
3.78
3.78
0.00
May
4.33
4.50
-0.17
Jun
4.40
4.54
-0.14
Jul
4.15
4.38
-0.23
Aug
3.91
4.03
-0.12
Sep
3.38
3.31
0.07
Oct
3.43
3.50
-0.07
Nov
2.70
2.75
-0.05
Dec
2.15
2.26
-0.11
38.77
39.76
-0.99