Viewing Station: IL-MCL-4 : Heyworth 0.6 E
Jan 21, 2007 - May 27, 20267,051 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.24"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
3.95"
Departure from Normal
-2.71" : 31% of Normal
Year-To-Date: 17.55"
Jan 1 to May 27, 2026(146 of 147 days covered by obs)
NOAA Normal
14.32"
Departure from Normal
3.23" : 123% of Normal
Water Year-To-Date: 21.99"
Oct 1, 2025 to May 27, 2026(238 of 239 days covered by obs)
NOAA Normal
22.71"
Departure from Normal
-0.72" : 97% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.12
2.21
-0.09
Feb
1.85
1.95
-0.10
Mar
2.60
2.66
-0.06
Apr
3.80
3.77
0.03
May
4.53
4.50
0.03
Jun
4.19
4.25
-0.06
Jul
4.09
4.05
0.04
Aug
3.50
3.46
0.04
Sep
3.07
3.23
-0.16
Oct
3.30
3.33
-0.03
Nov
2.90
2.84
0.06
Dec
2.19
2.32
-0.13
38.14
38.57
-0.43