Viewing Station: IL-LK-39 : Riverwoods 0.4 ENE
Apr 12, 2008 - Jun 18, 20266,106 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.93"
June 1-18, 2026(17 of 18 days covered by obs)
NOAA Normal
2.68"
Departure from Normal
2.25" : 184% of Normal
Year-To-Date: 20.15"
Jan 1 to Jun 18, 2026(155 of 169 days covered by obs)
NOAA Normal
16.61"
Departure from Normal
3.54" : 121% of Normal
Water Year-To-Date: 26.87"
Oct 1, 2025 to Jun 18, 2026(247 of 261 days covered by obs)
NOAA Normal
24.31"
Departure from Normal
2.56" : 111% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.88
1.98
-0.10
Feb
1.77
1.90
-0.13
Mar
2.22
2.26
-0.04
Apr
3.74
3.70
0.04
May
4.32
4.44
-0.12
Jun
4.47
4.25
0.22
Jul
3.78
3.62
0.16
Aug
3.78
3.80
-0.02
Sep
3.34
3.31
0.03
Oct
3.20
3.28
-0.08
Nov
2.45
2.41
0.04
Dec
2.05
2.09
-0.04
37.00
37.04
-0.04