Viewing Station: IL-RC-6 : Olney 1.5 NE
Mar 1, 2018 - Sep 22, 20262,967 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.87"
September 1-23, 2026(22 of 23 days covered by obs)
NOAA Normal
2.58"
Departure from Normal
-0.71" : 72% of Normal
Year-To-Date: 33.47"
Jan 1 to Sep 23, 2026(265 of 266 days covered by obs)
NOAA Normal
34.59"
Departure from Normal
-1.12" : 97% of Normal
Water Year-To-Date: 41.74"
Oct 1, 2025 to Sep 23, 2026(356 of 358 days covered by obs)
NOAA Normal
45.14"
Departure from Normal
-3.40" : 92% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.23
3.35
-0.12
Feb
2.45
2.54
-0.09
Mar
3.74
3.95
-0.21
Apr
4.88
4.89
-0.01
May
5.10
5.12
-0.02
Jun
4.85
4.86
-0.01
Jul
4.50
4.58
-0.08
Aug
3.26
3.01
0.25
Sep
3.37
3.30
0.07
Oct
3.57
3.65
-0.08
Nov
3.91
4.00
-0.09
Dec
3.07
3.36
-0.29
45.93
46.61
-0.68