Viewing Station: IL-WN-45 : Machesney Park 0.9 W
Apr 16, 2020 - Sep 15, 20251,980 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.24"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.77"
Departure from Normal
-1.53" : 14% of Normal
Year-To-Date: 25.89"
Jan 1 to Sep 15, 2025(258 of 258 days covered by obs)
NOAA Normal
27.80"
Departure from Normal
-1.91" : 93% of Normal
Water Year-To-Date: 29.57"
Oct 1, 2024 to Sep 15, 2025(350 of 350 days covered by obs)
NOAA Normal
34.78"
Departure from Normal
-5.21" : 85% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.56
1.61
-0.05
Feb
1.55
1.62
-0.07
Mar
2.13
2.15
-0.02
Apr
3.65
3.59
0.06
May
4.23
4.25
-0.02
Jun
5.23
5.36
-0.13
Jul
3.73
3.67
0.06
Aug
3.95
4.07
-0.12
Sep
3.54
3.67
-0.13
Oct
2.83
2.83
0.00
Nov
2.27
2.34
-0.07
Dec
1.88
1.98
-0.10
36.55
37.14
-0.59