Viewing Station: IL-WM-27 : Herrin 1.0 SE
Jun 19, 2025 - Sep 21, 2026458 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.04"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.43"
Departure from Normal
-1.39" : 43% of Normal
Year-To-Date: 27.32"
Jan 1 to Sep 22, 2026(264 of 265 days covered by obs)
NOAA Normal
35.20"
Departure from Normal
-7.88" : 78% of Normal
Water Year-To-Date: 35.62"
Oct 1, 2025 to Sep 22, 2026(356 of 357 days covered by obs)
NOAA Normal
46.43"
Departure from Normal
-10.81" : 77% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.24
3.19
0.05
Feb
3.08
3.09
-0.01
Mar
4.38
4.24
0.14
Apr
5.42
5.23
0.19
May
5.08
5.02
0.06
Jun
4.43
4.39
0.04
Jul
3.94
3.79
0.15
Aug
3.20
3.05
0.15
Sep
3.31
3.16
0.15
Oct
3.58
3.49
0.09
Nov
4.15
4.11
0.04
Dec
3.50
3.54
-0.04
47.31
46.30
1.01