Viewing Station: IL-MD-10 : Granite City 1.4 ENE
May 8, 2007 - May 27, 20266,673 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.85"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
4.28"
Departure from Normal
0.57" : 113% of Normal
Year-To-Date: 18.37"
Jan 1 to May 27, 2026(146 of 147 days covered by obs)
NOAA Normal
16.87"
Departure from Normal
1.50" : 109% of Normal
Water Year-To-Date: 25.45"
Oct 1, 2025 to May 27, 2026(238 of 239 days covered by obs)
NOAA Normal
25.96"
Departure from Normal
-0.51" : 98% 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