Weather forecast for: Oconomowoc WI
Last Update: 3:32 am CDT Sep 15, 2026
Overnight: Showers and possibly a thunderstorm. Low around 62. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday: Showers likely and possibly a thunderstorm before 11am, then scattered showers between 11am and 1pm. Mostly cloudy, with a high near 75. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night: Mostly cloudy, with a low around 55. Northwest wind around 5 mph becoming calm in the evening.
Wednesday: Partly sunny, with a high near 70. East wind 5 to 10 mph.
Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 59. East wind around 5 mph becoming calm in the evening.
Thursday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 76. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night: Mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm.
Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 72. East wind 5 to 10 mph.
Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 60. Chance of precipitation is 80%.
Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Sunday: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70.
Sunday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 52.
Monday: Partly sunny, with a high near 69.
WeatherWorld.com
City of Oconomowoc, Wisconsin
