Viewing Station: IL-LK-42 : Gurnee 1.6 W
Apr 12, 2008 - Sep 21, 20266,534 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.27"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.52"
Departure from Normal
1.75" : 170% of Normal
Year-To-Date: 38.26"
Jan 1 to Sep 22, 2026(264 of 265 days covered by obs)
NOAA Normal
27.72"
Departure from Normal
10.54" : 138% of Normal
Water Year-To-Date: 45.30"
Oct 1, 2025 to Sep 22, 2026(356 of 357 days covered by obs)
NOAA Normal
35.27"
Departure from Normal
10.03" : 128% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.80
1.95
-0.15
Feb
1.75
1.91
-0.16
Mar
2.25
2.29
-0.04
Apr
3.80
3.80
0.00
May
4.13
4.30
-0.17
Jun
4.32
4.37
-0.05
Jul
3.47
3.66
-0.19
Aug
3.68
3.59
0.09
Sep
3.43
3.55
-0.12
Oct
3.21
3.19
0.02
Nov
2.41
2.41
0.00
Dec
1.93
2.13
-0.20
36.18
37.15
-0.97