Viewing Station: IL-CK-149 : Oak Lawn 0.5 SSW
Nov 1, 2009 - Jun 12, 20265,743 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.12"
June 1-13, 2026(12 of 13 days covered by obs)
NOAA Normal
1.85"
Departure from Normal
2.27" : 223% of Normal
Year-To-Date: 21.33"
Jan 1 to Jun 13, 2026(163 of 164 days covered by obs)
NOAA Normal
16.29"
Departure from Normal
5.04" : 131% of Normal
Water Year-To-Date: 29.06"
Oct 1, 2025 to Jun 13, 2026(255 of 256 days covered by obs)
NOAA Normal
24.44"
Departure from Normal
4.62" : 119% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.03
2.19
-0.16
Feb
1.81
1.99
-0.18
Mar
2.36
2.37
-0.01
Apr
3.81
3.86
-0.05
May
4.43
4.51
-0.08
Jun
4.26
4.29
-0.03
Jul
3.71
3.95
-0.24
Aug
4.06
4.03
0.03
Sep
3.25
3.26
-0.01
Oct
3.50
3.44
0.06
Nov
2.56
2.61
-0.05
Dec
2.09
2.28
-0.19
37.87
38.78
-0.91