Viewing Station: IL-CK-42 : Mount Prospect 3.0 NE
Mar 26, 2007 - Sep 20, 20265,981 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 3.41"
September 1-22, 2026(20 of 22 days covered by obs)
NOAA Normal
2.41"
Departure from Normal
1.00" : 141% of Normal
Year-To-Date: 30.87"
Jan 1 to Sep 22, 2026(262 of 265 days covered by obs)
NOAA Normal
28.61"
Departure from Normal
2.26" : 108% of Normal
Water Year-To-Date: 35.71"
Oct 1, 2025 to Sep 22, 2026(354 of 357 days covered by obs)
NOAA Normal
36.30"
Departure from Normal
-0.59" : 98% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.89
1.99
-0.10
Feb
1.78
1.90
-0.12
Mar
2.24
2.24
0.00
Apr
3.74
3.71
0.03
May
4.37
4.50
-0.13
Jun
4.53
4.24
0.29
Jul
3.82
3.55
0.27
Aug
3.83
3.92
-0.09
Sep
3.29
3.24
0.05
Oct
3.22
3.27
-0.05
Nov
2.40
2.41
-0.01
Dec
2.07
2.11
-0.04
37.18
37.08
0.10