Viewing Station: IL-WN-50 : Rockton 3.1 SW
May 18, 2021 - Sep 15, 2025878 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.30"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.81"
Departure from Normal
-1.51" : 17% of Normal
Year-To-Date: 21.48"
Jan 1 to Sep 15, 2025(126 of 258 days covered by obs)
NOAA Normal
28.14"
Departure from Normal
-6.66" : 76% of Normal
Water Year-To-Date: 21.48"
Oct 1, 2024 to Sep 15, 2025(147 of 350 days covered by obs)
NOAA Normal
35.20"
Departure from Normal
-13.72" : 61% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.57
1.58
-0.01
Feb
1.58
1.56
0.02
Mar
2.14
2.14
0.00
Apr
3.67
3.55
0.12
May
4.24
4.21
0.03
Jun
5.37
5.36
0.01
Jul
3.76
3.65
0.11
Aug
4.00
4.07
-0.07
Sep
3.63
3.72
-0.09
Oct
2.87
2.86
0.01
Nov
2.29
2.38
-0.09
Dec
1.90
1.95
-0.05
37.02
37.03
-0.01