Viewing Station: IL-ME-8 : Petersburg 6.5 SSE
Jul 22, 2013 - Sep 20, 20264,327 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.34"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.03"
Departure from Normal
0.31" : 115% of Normal
Year-To-Date: 36.42"
Jan 1 to Sep 20, 2026(263 of 263 days covered by obs)
NOAA Normal
28.67"
Departure from Normal
7.75" : 127% of Normal
Water Year-To-Date: 40.22"
Oct 1, 2025 to Sep 20, 2026(355 of 355 days covered by obs)
NOAA Normal
36.81"
Departure from Normal
3.41" : 109% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.12
2.12
0.00
Feb
1.91
1.86
0.05
Mar
2.57
2.61
-0.04
Apr
3.99
3.94
0.05
May
4.56
4.65
-0.09
Jun
4.31
4.20
0.11
Jul
3.67
3.79
-0.12
Aug
3.51
3.43
0.08
Sep
3.05
3.08
-0.03
Oct
3.22
3.12
0.10
Nov
2.87
2.84
0.03
Dec
2.05
2.10
-0.05
37.83
37.74
0.09