Viewing Station: IL-CK-456 : Hoffman Estates 4.2 W
Aug 15, 2025 - Sep 21, 2026400 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.68"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.54"
Departure from Normal
1.14" : 145% of Normal
Year-To-Date: 35.52"
Jan 1 to Sep 22, 2026(261 of 265 days covered by obs)
NOAA Normal
29.24"
Departure from Normal
6.28" : 121% of Normal
Water Year-To-Date: 41.93"
Oct 1, 2025 to Sep 22, 2026(353 of 357 days covered by obs)
NOAA Normal
36.98"
Departure from Normal
4.95" : 113% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.75
1.93
-0.18
Feb
1.77
1.82
-0.05
Mar
2.31
2.26
0.05
Apr
3.74
3.77
-0.03
May
4.78
4.91
-0.13
Jun
4.55
4.51
0.04
Jul
3.87
3.78
0.09
Aug
3.93
4.14
-0.21
Sep
3.46
3.47
-0.01
Oct
3.26
3.30
-0.04
Nov
2.42
2.52
-0.10
Dec
2.06
2.13
-0.07
37.90
38.54
-0.64