Viewing Station: IL-CK-367 : Mount Prospect 0.2 NNE
Jul 18, 2021 - Dec 15, 20251,504 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.66"
December 1-15, 2025(14 of 15 days covered by obs)
NOAA Normal
1.01"
Departure from Normal
-0.35" : 66% of Normal
Year-To-Date: 26.78"
Jan 1 to Dec 15, 2025(342 of 349 days covered by obs)
NOAA Normal
36.39"
Departure from Normal
-9.61" : 74% of Normal
Water Year-To-Date: 4.26"
Oct 1, 2025 to Dec 15, 2025(73 of 76 days covered by obs)
NOAA Normal
6.64"
Departure from Normal
-2.38" : 64% 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