Viewing Station: IL-LK-74 : Mundelein 1.6 WNW
Dec 2, 2012 - Sep 22, 20264,010 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.49"
September 1-23, 2026(22 of 23 days covered by obs)
NOAA Normal
2.62"
Departure from Normal
1.87" : 171% of Normal
Year-To-Date: 35.88"
Jan 1 to Sep 23, 2026(265 of 266 days covered by obs)
NOAA Normal
28.49"
Departure from Normal
7.39" : 126% of Normal
Water Year-To-Date: 42.32"
Oct 1, 2025 to Sep 23, 2026(357 of 358 days covered by obs)
NOAA Normal
36.14"
Departure from Normal
6.18" : 117% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.84
1.89
-0.05
Feb
1.74
1.89
-0.15
Mar
2.24
2.32
-0.08
Apr
3.82
3.74
0.08
May
4.21
4.48
-0.27
Jun
4.49
4.39
0.10
Jul
3.74
3.74
0.00
Aug
3.79
3.71
0.08
Sep
3.42
3.43
-0.01
Oct
3.19
3.19
0.00
Nov
2.45
2.40
0.05
Dec
2.01
2.07
-0.06
36.94
37.25
-0.31