Viewing Station: IL-MU-1 : Arthur 0.8 NNW
Feb 27, 2009 - May 27, 20261,973 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.54"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
3.84"
Departure from Normal
-0.30" : 92% of Normal
Year-To-Date: 12.11"
Jan 1 to May 27, 2026(68 of 147 days covered by obs)
NOAA Normal
15.04"
Departure from Normal
-2.93" : 81% of Normal
Water Year-To-Date: 14.45"
Oct 1, 2025 to May 27, 2026(108 of 239 days covered by obs)
NOAA Normal
23.96"
Departure from Normal
-9.51" : 60% 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