Viewing Station: IL-CK-148 : Oak Lawn 1.9 SE
Oct 26, 2009 - Aug 22, 20264,575 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.65"
August 1-25, 2026(22 of 25 days covered by obs)
NOAA Normal
3.24"
Departure from Normal
2.41" : 174% of Normal
Year-To-Date: 37.64"
Jan 1 to Aug 25, 2026(234 of 237 days covered by obs)
NOAA Normal
25.95"
Departure from Normal
11.69" : 145% of Normal
Water Year-To-Date: 44.89"
Oct 1, 2025 to Aug 25, 2026(325 of 329 days covered by obs)
NOAA Normal
34.16"
Departure from Normal
10.73" : 131% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.11
2.19
-0.08
Feb
1.85
1.99
-0.14
Mar
2.37
2.37
0.00
Apr
3.82
3.84
-0.02
May
4.43
4.50
-0.07
Jun
4.33
4.27
0.06
Jul
3.80
4.01
-0.21
Aug
4.02
4.04
-0.02
Sep
3.30
3.27
0.03
Oct
3.47
3.46
0.01
Nov
2.61
2.63
-0.02
Dec
2.13
2.27
-0.14
38.24
38.84
-0.60