RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1040 CDT Mon Sep 7 2026 ...Lake Beulah... .TODAY... Waves...............Nearly calm. Sky/Weather.........Mostly sunny. Max Temperature.....Around 78. Winds...............Southeast winds 5 to 10 mph. Water Temperature...71 degrees. UV Index............7 - High. .TONIGHT... Waves...............Half foot to 1 foot. Sky/Weather.........Partly cloudy. Min Temperature.....Around 59. Winds...............South winds up to 5 mph. Water Temperature...71 degrees. UV Index............7 - High. .TUESDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Partly sunny. Max Temperature.....Lower 80s. Winds...............South winds around 10 mph. .WEDNESDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly cloudy. Chance of showers and slight chance of thunderstorms. Max Temperature.....Lower 80s. Winds...............West winds around 10 mph. .THURSDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Sunny. Max Temperature.....Mid 70s. Winds...............Northwest winds around 5 mph. Sunrise: 06:24 AM CDT Sunset: 07:20 PM CDT $$