Viewing Station: IL-MD-10 : Granite City 1.4 ENE
May 8, 2007 - Sep 17, 20266,784 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.50"
September 1-17, 2026(17 of 17 days covered by obs)
NOAA Normal
1.86"
Departure from Normal
-1.36" : 27% of Normal
Year-To-Date: 37.61"
Jan 1 to Sep 17, 2026(259 of 260 days covered by obs)
NOAA Normal
30.89"
Departure from Normal
6.72" : 122% of Normal
Water Year-To-Date: 44.69"
Oct 1, 2025 to Sep 17, 2026(351 of 352 days covered by obs)
NOAA Normal
39.98"
Departure from Normal
4.71" : 112% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.48
2.65
-0.17
Feb
2.14
2.29
-0.15
Mar
3.35
3.39
-0.04
Apr
4.62
4.70
-0.08
May
4.91
5.10
-0.19
Jun
4.24
4.42
-0.18
Jul
4.01
4.12
-0.11
Aug
3.28
3.68
-0.40
Sep
3.29
3.28
0.01
Oct
3.13
3.21
-0.08
Nov
3.36
3.52
-0.16
Dec
2.60
2.63
-0.03
41.41
42.99
-1.58