Viewing Station: IL-MA-27 : Decatur 3.2 SW
Mar 11, 2020 - Sep 25, 20261,575 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.74"
September 1-25, 2026(25 of 25 days covered by obs)
NOAA Normal
2.50"
Departure from Normal
0.24" : 110% of Normal
Year-To-Date: 41.47"
Jan 1 to Sep 25, 2026(266 of 268 days covered by obs)
NOAA Normal
29.66"
Departure from Normal
11.81" : 140% of Normal
Water Year-To-Date: 47.90"
Oct 1, 2025 to Sep 25, 2026(358 of 360 days covered by obs)
NOAA Normal
38.31"
Departure from Normal
9.59" : 125% 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