Viewing Station: IL-LS-39 : Ottawa 0.5 NNW
Mar 1, 2010 - Dec 15, 20221,944 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.00"
June 1-9, 2026(0 of 9 days covered by obs)
NOAA Normal
1.31"
Departure from Normal
-1.31" : 0% of Normal
Year-To-Date: 0.00"
Jan 1 to Jun 9, 2026(0 of 160 days covered by obs)
NOAA Normal
15.22"
Departure from Normal
-15.22" : 0% of Normal
Water Year-To-Date: 0.00"
Oct 1, 2025 to Jun 9, 2026(0 of 252 days covered by obs)
NOAA Normal
22.70"
Departure from Normal
-22.70" : 0% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.92
1.91
0.01
Feb
1.75
1.80
-0.05
Mar
2.24
2.39
-0.15
Apr
3.53
3.52
0.01
May
4.47
4.56
-0.09
Jun
4.37
4.46
-0.09
Jul
3.77
3.78
-0.01
Aug
3.64
3.76
-0.12
Sep
3.21
3.30
-0.09
Oct
3.06
3.12
-0.06
Nov
2.46
2.62
-0.16
Dec
1.96
2.07
-0.11
36.38
37.29
-0.91