Viewing Station: IL-LK-100 : Long Lake 0.4 S
Aug 6, 2017 - Sep 21, 20263,334 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.03"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.56"
Departure from Normal
2.47" : 197% of Normal
Year-To-Date: 41.03"
Jan 1 to Sep 22, 2026(264 of 265 days covered by obs)
NOAA Normal
28.06"
Departure from Normal
12.97" : 146% of Normal
Water Year-To-Date: 47.65"
Oct 1, 2025 to Sep 22, 2026(356 of 357 days covered by obs)
NOAA Normal
35.64"
Departure from Normal
12.01" : 134% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.82
1.87
-0.05
Feb
1.72
1.84
-0.12
Mar
2.22
2.27
-0.05
Apr
3.80
3.77
0.03
May
4.17
4.38
-0.21
Jun
4.46
4.53
-0.07
Jul
3.58
3.72
-0.14
Aug
3.73
3.67
0.06
Sep
3.49
3.47
0.02
Oct
3.16
3.12
0.04
Nov
2.44
2.36
0.08
Dec
1.98
2.07
-0.09
36.57
37.07
-0.50