Viewing Station: IL-LK-18 : Grayslake 0.7 WSW
Feb 18, 2007 - Aug 2, 20261,518 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.12"
August 1-2, 2026(2 of 2 days covered by obs)
NOAA Normal
0.24"
Departure from Normal
2.88" : 1304% of Normal
Year-To-Date: 24.19"
Jan 1 to Aug 2, 2026(119 of 214 days covered by obs)
NOAA Normal
22.01"
Departure from Normal
2.18" : 110% of Normal
Water Year-To-Date: 28.29"
Oct 1, 2025 to Aug 2, 2026(153 of 306 days covered by obs)
NOAA Normal
29.61"
Departure from Normal
-1.32" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.84
1.91
-0.07
Feb
1.73
1.89
-0.16
Mar
2.23
2.30
-0.07
Apr
3.81
3.79
0.02
May
4.16
4.35
-0.19
Jun
4.43
4.43
0.00
Jul
3.57
3.71
-0.14
Aug
3.71
3.64
0.07
Sep
3.46
3.50
-0.04
Oct
3.17
3.16
0.01
Nov
2.45
2.39
0.06
Dec
1.98
2.10
-0.12
36.54
37.17
-0.63