Viewing Station: IL-PT-6 : Monticello 6.5 WSW
May 8, 2008 - Sep 21, 20266,581 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.68"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.28"
Departure from Normal
-0.60" : 74% of Normal
Year-To-Date: 32.88"
Jan 1 to Sep 22, 2026(263 of 265 days covered by obs)
NOAA Normal
29.09"
Departure from Normal
3.79" : 113% of Normal
Water Year-To-Date: 37.15"
Oct 1, 2025 to Sep 22, 2026(355 of 357 days covered by obs)
NOAA Normal
37.60"
Departure from Normal
-0.45" : 99% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.14
2.25
-0.11
Feb
1.92
2.03
-0.11
Mar
2.60
2.70
-0.10
Apr
4.03
3.88
0.15
May
4.52
4.49
0.03
Jun
4.37
4.40
-0.03
Jul
3.95
4.01
-0.06
Aug
3.28
3.13
0.15
Sep
3.11
3.07
0.04
Oct
3.20
3.17
0.03
Nov
3.05
2.94
0.11
Dec
2.26
2.32
-0.06
38.43
38.39
0.04