RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1531 CDT Tue May 26 2026 ...Nagawicka Lake... .TONIGHT... Waves...............Nearly calm. Sky/Weather.........Partly cloudy. Min Temperature.....Around 59. Winds...............Southeast winds up to 5 mph in the afternoon and evening becoming light. Water Temperature...69 degrees. UV Index............8 - Very High. .WEDNESDAY... Waves...............Half foot or less. Sky/Weather.........Mostly sunny. Max Temperature.....Around 82. Winds...............Northeast winds up to 5 mph increasing to around 10 mph in the afternoon. Water Temperature...69 degrees. UV Index............8 - Very High. .WEDNESDAY NIGHT... Waves...............Half foot to 1 foot. Sky/Weather.........Partly cloudy. Isolated showers. Min Temperature.....Lower 50s. Winds...............Northeast winds around 10 mph. .THURSDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Sunny. Max Temperature.....Mid 70s. Winds...............Northeast winds around 10 mph. .FRIDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Lower 80s. Winds...............Light winds. Sunrise: 05:20 AM CDT Sunset: 08:21 PM CDT $$