Viewing Station: WI-WK-106 : Oconomowoc Lake 1.8 S
Apr 8, 2021 - Sep 15, 20261,458 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.67"
September 1-15, 2026(4 of 15 days covered by obs)
NOAA Normal
1.66"
Departure from Normal
0.01" : 101% of Normal
Year-To-Date: 25.81"
Jan 1 to Sep 15, 2026(72 of 258 days covered by obs)
NOAA Normal
27.02"
Departure from Normal
-1.21" : 96% of Normal
Water Year-To-Date: 29.92"
Oct 1, 2025 to Sep 15, 2026(107 of 350 days covered by obs)
NOAA Normal
33.83"
Departure from Normal
-3.91" : 88% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.61
1.62
-0.01
Feb
1.54
1.58
-0.04
Mar
1.97
2.02
-0.05
Apr
3.65
3.70
-0.05
May
4.02
4.07
-0.05
Jun
4.75
4.82
-0.07
Jul
3.96
3.98
-0.02
Aug
3.86
3.99
-0.13
Sep
3.32
3.29
0.03
Oct
2.82
2.83
-0.01
Nov
2.19
2.16
0.03
Dec
1.80
1.87
-0.07
35.49
35.93
-0.44