Viewing Station: IL-CK-278 : Hoffman Estates 1.6 SE
Apr 5, 2016 - Sep 21, 20263,803 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.88"
September 1-22, 2026(22 of 22 days covered by obs)
NOAA Normal
2.52"
Departure from Normal
1.36" : 154% of Normal
Year-To-Date: 33.64"
Jan 1 to Sep 22, 2026(265 of 265 days covered by obs)
NOAA Normal
29.18"
Departure from Normal
4.46" : 115% of Normal
Water Year-To-Date: 39.58"
Oct 1, 2025 to Sep 22, 2026(357 of 357 days covered by obs)
NOAA Normal
36.95"
Departure from Normal
2.63" : 107% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.83
1.97
-0.14
Feb
1.77
1.87
-0.10
Mar
2.29
2.24
0.05
Apr
3.78
3.74
0.04
May
4.63
4.79
-0.16
Jun
4.59
4.44
0.15
Jul
3.85
3.71
0.14
Aug
3.92
4.12
-0.20
Sep
3.43
3.41
0.02
Oct
3.27
3.31
-0.04
Nov
2.42
2.47
-0.05
Dec
2.08
2.12
-0.04
37.86
38.19
-0.33