Viewing Station: IL-SG-45 : Chatham 1.5 E
May 30, 2014 - Nov 20, 20254,093 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.67"
November 1-20, 2025(20 of 20 days covered by obs)
NOAA Normal
2.03"
Departure from Normal
-1.36" : 33% of Normal
Year-To-Date: 23.48"
Jan 1 to Nov 20, 2025(324 of 324 days covered by obs)
NOAA Normal
35.41"
Departure from Normal
-11.93" : 66% of Normal
Water Year-To-Date: 2.27"
Oct 1, 2025 to Nov 20, 2025(51 of 51 days covered by obs)
NOAA Normal
5.18"
Departure from Normal
-2.91" : 44% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.15
2.15
0.00
Feb
2.00
1.92
0.08
Mar
2.75
2.69
0.06
Apr
4.18
4.03
0.15
May
4.49
4.59
-0.10
Jun
4.38
4.40
-0.02
Jul
3.75
3.53
0.22
Aug
3.41
3.08
0.33
Sep
3.12
3.12
0.00
Oct
3.15
3.10
0.05
Nov
3.04
2.96
0.08
Dec
2.15
2.17
-0.02
38.57
37.74
0.83