Viewing Station: WI-WK-106 : Oconomowoc Lake 1.8 S
Apr 8, 2021 - May 18, 20261,427 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.50"
May 1-18, 2026(3 of 18 days covered by obs)
NOAA Normal
2.33"
Departure from Normal
-1.83" : 21% of Normal
Year-To-Date: 12.37"
Jan 1 to May 18, 2026(41 of 138 days covered by obs)
NOAA Normal
11.10"
Departure from Normal
1.27" : 111% of Normal
Water Year-To-Date: 16.48"
Oct 1, 2025 to May 18, 2026(76 of 230 days covered by obs)
NOAA Normal
17.91"
Departure from Normal
-1.43" : 92% 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