Viewing Station: IL-HY-4 : Atkinson 2.6 NNE
Aug 21, 2007 - May 25, 20265,897 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.51"
May 1-31, 2026(25 of 31 days covered by obs)
NOAA Normal
4.83"
Departure from Normal
-3.32" : 31% of Normal
Year-To-Date: 12.10"
Jan 1 to May 31, 2026(145 of 151 days covered by obs)
NOAA Normal
14.55"
Departure from Normal
-2.45" : 83% of Normal
Water Year-To-Date: 16.95"
Oct 1, 2025 to May 31, 2026(237 of 243 days covered by obs)
NOAA Normal
21.87"
Departure from Normal
-4.92" : 78% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.69
1.68
0.01
Feb
1.78
1.83
-0.05
Mar
2.47
2.43
0.04
Apr
3.78
3.73
0.05
May
4.83
4.86
-0.03
Jun
4.71
4.69
0.02
Jul
3.94
4.02
-0.08
Aug
3.82
3.95
-0.13
Sep
3.46
3.53
-0.07
Oct
2.82
2.93
-0.11
Nov
2.45
2.42
0.03
Dec
2.05
2.04
0.01
37.80
38.11
-0.31