RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1530 CDT Tue Sep 23 2025 ...Lake Wisconsin... .TONIGHT... Waves...............Half foot or less. Sky/Weather.........Mostly sunny until 8 PM, then partly cloudy until 5 AM, then mostly cloudy. Patchy fog after 2 AM. Min Temperature.....Around 56. Winds...............Northeast winds up to 5 mph. Water Temperature...64 degrees. UV Index............4 - Moderate. .WEDNESDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly cloudy. Patchy fog until 11 AM. Max Temperature.....Around 71. Winds...............North winds 5 to 10 mph. Water Temperature...64 degrees. UV Index............4 - Moderate. .WEDNESDAY NIGHT... Waves...............Half foot or less. Sky/Weather.........Partly cloudy. Min Temperature.....Mid 50s. Winds...............Light winds. .THURSDAY... Waves...............Half foot or less. Sky/Weather.........Sunny. Max Temperature.....Mid 70s. Winds...............Northwest winds around 5 mph. .FRIDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Lower 80s. Winds...............Southwest winds around 5 mph. Sunrise: 06:46 AM CDT Sunset: 06:56 PM CDT $$