Viewing Station: IL-RH-18 : Percy 0.7 SSW
Jun 17, 2026 - Sep 21, 202694 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 1.63"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
2.15"
Departure from Normal
-0.52" : 76% of Normal
Year-To-Date: 16.55"
Jan 1 to Sep 22, 2026(97 of 265 days covered by obs)
NOAA Normal
32.63"
Departure from Normal
-16.08" : 51% of Normal
Water Year-To-Date: 16.55"
Oct 1, 2025 to Sep 22, 2026(97 of 357 days covered by obs)
NOAA Normal
42.66"
Departure from Normal
-26.11" : 39% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.77
2.82
-0.05
Feb
2.58
2.57
0.01
Mar
3.84
3.85
-0.01
Apr
4.97
4.98
-0.01
May
5.14
5.35
-0.21
Jun
4.27
4.48
-0.21
Jul
3.84
3.91
-0.07
Aug
3.07
3.13
-0.06
Sep
2.93
3.14
-0.21
Oct
3.20
3.12
0.08
Nov
3.87
3.90
-0.03
Dec
2.96
2.97
-0.01
43.44
44.22
-0.78