Viewing Station: IL-LK-39 : Riverwoods 0.4 ENE
Apr 12, 2008 - Sep 26, 20266,205 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 3.82"
September 1-27, 2026(26 of 27 days covered by obs)
NOAA Normal
3.01"
Departure from Normal
0.81" : 127% of Normal
Year-To-Date: 34.19"
Jan 1 to Sep 27, 2026(251 of 270 days covered by obs)
NOAA Normal
28.97"
Departure from Normal
5.22" : 118% of Normal
Water Year-To-Date: 40.91"
Oct 1, 2025 to Sep 27, 2026(343 of 362 days covered by obs)
NOAA Normal
36.67"
Departure from Normal
4.24" : 112% 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