RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 316 CDT Tue Oct 20 2026 ...Lake Wisconsin... .TODAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Around 67. Winds...............Southeast winds up to 5 mph. Water Temperature...57 degrees. UV Index............4 - Moderate. .TONIGHT... Waves...............Nearly calm. Sky/Weather.........Mostly clear. Min Temperature.....Around 42. Winds...............South winds up to 5 mph. Water Temperature...57 degrees. UV Index............4 - Moderate. .WEDNESDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Upper 60s. Winds...............Southwest winds around 5 mph. .THURSDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Upper 60s. Winds...............Light winds becoming southeast around 5 mph in the afternoon. .FRIDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly sunny. Max Temperature.....Upper 60s. Winds...............Southeast winds 5 to 10 mph. Sunrise: 07:18 AM CDT Sunset: 06:09 PM CDT $$