Viewing Station: IL-CK-390 : Alsip 0.9 E
Mar 17, 2023 - Sep 21, 20261,185 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.33"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.42"
Departure from Normal
2.91" : 220% of Normal
Year-To-Date: 39.52"
Jan 1 to Sep 22, 2026(262 of 265 days covered by obs)
NOAA Normal
29.15"
Departure from Normal
10.37" : 136% of Normal
Water Year-To-Date: 46.29"
Oct 1, 2025 to Sep 22, 2026(353 of 357 days covered by obs)
NOAA Normal
37.36"
Departure from Normal
8.93" : 124% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.11
2.19
-0.08
Feb
1.85
2.00
-0.15
Mar
2.37
2.38
-0.01
Apr
3.82
3.84
-0.02
May
4.43
4.50
-0.07
Jun
4.33
4.28
0.05
Jul
3.80
4.06
-0.26
Aug
4.02
4.04
-0.02
Sep
3.30
3.28
0.02
Oct
3.47
3.47
0.00
Nov
2.61
2.64
-0.03
Dec
2.13
2.26
-0.13
38.24
38.94
-0.70