Viewing Station: IL-CK-367 : Mount Prospect 0.2 NNE
Jul 18, 2021 - Sep 23, 20261,764 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 3.67"
September 1-23, 2026(23 of 23 days covered by obs)
NOAA Normal
2.55"
Departure from Normal
1.12" : 144% of Normal
Year-To-Date: 32.04"
Jan 1 to Sep 23, 2026(266 of 266 days covered by obs)
NOAA Normal
28.97"
Departure from Normal
3.07" : 111% of Normal
Water Year-To-Date: 37.33"
Oct 1, 2025 to Sep 23, 2026(355 of 358 days covered by obs)
NOAA Normal
36.68"
Departure from Normal
0.65" : 102% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.89
2.00
-0.11
Feb
1.78
1.90
-0.12
Mar
2.26
2.23
0.03
Apr
3.75
3.72
0.03
May
4.49
4.54
-0.05
Jun
4.59
4.27
0.32
Jul
3.82
3.58
0.24
Aug
3.84
3.96
-0.12
Sep
3.33
3.23
0.10
Oct
3.23
3.25
-0.02
Nov
2.40
2.41
-0.01
Dec
2.08
2.12
-0.04
37.46
37.21
0.25