Viewing Station: IL-MA-41 : Decatur 3.0 W
Dec 25, 2025 - May 27, 2026154 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.91"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
3.95"
Departure from Normal
-1.04" : 74% of Normal
Year-To-Date: 17.90"
Jan 1 to May 27, 2026(147 of 147 days covered by obs)
NOAA Normal
14.73"
Departure from Normal
3.17" : 121% of Normal
Water Year-To-Date: 18.18"
Oct 1, 2025 to May 27, 2026(154 of 239 days covered by obs)
NOAA Normal
23.31"
Departure from Normal
-5.13" : 78% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.10
2.31
-0.21
Feb
1.93
2.01
-0.08
Mar
2.67
2.69
-0.02
Apr
4.08
4.12
-0.04
May
4.54
4.63
-0.09
Jun
4.43
4.59
-0.16
Jul
3.95
3.65
0.30
Aug
3.25
3.24
0.01
Sep
2.99
3.10
-0.11
Oct
3.30
3.25
0.05
Nov
3.01
3.09
-0.08
Dec
2.27
2.37
-0.10
38.52
39.05
-0.53