Viewing Station: IL-MCH-87 : Marengo 0.7 NNE
Nov 26, 2017 - Oct 30, 20252,947 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.40"
October 1-31, 2025(29 of 31 days covered by obs)
NOAA Normal
2.96"
Departure from Normal
-1.56" : 47% of Normal
Year-To-Date: 22.82"
Jan 1 to Oct 31, 2025(300 of 304 days covered by obs)
NOAA Normal
32.79"
Departure from Normal
-9.97" : 70% of Normal
Water Year-To-Date: 1.40"
Oct 1, 2025 to Oct 31, 2025(29 of 31 days covered by obs)
NOAA Normal
2.96"
Departure from Normal
-1.56" : 47% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.69
1.69
0.00
Feb
1.61
1.70
-0.09
Mar
2.17
2.27
-0.10
Apr
3.72
3.72
0.00
May
4.50
4.51
-0.01
Jun
4.79
4.91
-0.12
Jul
3.98
3.92
0.06
Aug
3.95
3.98
-0.03
Sep
3.42
3.54
-0.12
Oct
2.96
2.78
0.18
Nov
2.38
2.37
0.01
Dec
1.93
1.95
-0.02
37.10
37.34
-0.24