Viewing Station: IL-IR-21 : Clifton 0.5 WNW
May 7, 2018 - Sep 18, 2026502 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.10"
September 1-18, 2026(3 of 18 days covered by obs)
NOAA Normal
1.83"
Departure from Normal
0.27" : 115% of Normal
Year-To-Date: 20.55"
Jan 1 to Sep 18, 2026(43 of 261 days covered by obs)
NOAA Normal
28.92"
Departure from Normal
-8.37" : 71% of Normal
Water Year-To-Date: 22.74"
Oct 1, 2025 to Sep 18, 2026(50 of 353 days covered by obs)
NOAA Normal
36.85"
Departure from Normal
-14.11" : 62% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.21
2.16
0.05
Feb
1.78
1.87
-0.09
Mar
2.34
2.45
-0.11
Apr
3.64
3.60
0.04
May
4.40
4.36
0.04
Jun
4.78
4.77
0.01
Jul
4.34
4.38
-0.04
Aug
3.60
3.62
-0.02
Sep
3.05
3.20
-0.15
Oct
3.19
3.24
-0.05
Nov
2.64
2.65
-0.01
Dec
2.10
2.16
-0.06
38.07
38.46
-0.39