Viewing Station: IL-MA-27 : Decatur 3.2 SW
Mar 11, 2020 - Jun 20, 20261,509 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.86"
June 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
3.00"
Departure from Normal
2.86" : 195% of Normal
Year-To-Date: 25.34"
Jan 1 to Jun 20, 2026(171 of 171 days covered by obs)
NOAA Normal
18.47"
Departure from Normal
6.87" : 137% of Normal
Water Year-To-Date: 31.77"
Oct 1, 2025 to Jun 20, 2026(263 of 263 days covered by obs)
NOAA Normal
27.12"
Departure from Normal
4.65" : 117% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.13
2.32
-0.19
Feb
1.94
2.01
-0.07
Mar
2.70
2.69
0.01
Apr
4.12
4.14
-0.02
May
4.58
4.62
-0.04
Jun
4.50
4.59
-0.09
Jul
3.93
3.62
0.31
Aug
3.26
3.23
0.03
Sep
3.00
3.10
-0.10
Oct
3.31
3.25
0.06
Nov
3.04
3.10
-0.06
Dec
2.30
2.38
-0.08
38.81
39.05
-0.24