Viewing Station: IL-SG-45 : Chatham 1.5 E
May 30, 2014 - Aug 16, 20264,358 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.48"
August 1-17, 2026(16 of 17 days covered by obs)
NOAA Normal
1.87"
Departure from Normal
0.61" : 133% of Normal
Year-To-Date: 30.88"
Jan 1 to Aug 17, 2026(228 of 229 days covered by obs)
NOAA Normal
25.57"
Departure from Normal
5.31" : 121% of Normal
Water Year-To-Date: 35.80"
Oct 1, 2025 to Aug 17, 2026(320 of 321 days covered by obs)
NOAA Normal
33.91"
Departure from Normal
1.89" : 106% 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