Viewing Station: IL-MU-1 : Arthur 0.8 NNW
Feb 27, 2009 - Sep 19, 20262,076 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.27"
September 1-19, 2026(19 of 19 days covered by obs)
NOAA Normal
1.87"
Departure from Normal
-1.60" : 14% of Normal
Year-To-Date: 30.52"
Jan 1 to Sep 19, 2026(183 of 262 days covered by obs)
NOAA Normal
29.15"
Departure from Normal
1.37" : 105% of Normal
Water Year-To-Date: 32.86"
Oct 1, 2025 to Sep 19, 2026(223 of 354 days covered by obs)
NOAA Normal
38.07"
Departure from Normal
-5.21" : 86% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.30
2.39
-0.09
Feb
1.98
2.08
-0.10
Mar
2.71
2.79
-0.08
Apr
4.21
4.31
-0.10
May
4.41
4.53
-0.12
Jun
4.48
4.54
-0.06
Jul
4.06
4.02
0.04
Aug
3.13
2.79
0.34
Sep
2.96
2.98
-0.02
Oct
3.29
3.30
-0.01
Nov
3.28
3.34
-0.06
Dec
2.35
2.48
-0.13
39.16
39.55
-0.39