RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1530 CDT Fri Mar 27 2026 ...Lake Monona... .TONIGHT... Waves...............1 to 1.5 feet. Sky/Weather.........Mostly sunny until 8 PM, then mostly clear. Min Temperature.....Around 22. Winds...............Northwest winds 10 to 15 mph becoming west up to 5 mph after midnight. Water Temperature...46 degrees. UV Index............4 - Moderate. .SATURDAY... Waves...............1 to 1.5 feet. Sky/Weather.........Sunny. Max Temperature.....Around 50. Winds...............Southwest winds 10 to 15 mph. Water Temperature...46 degrees. UV Index............4 - Moderate. .SATURDAY NIGHT... Waves...............1.5 to 2 feet. Sky/Weather.........Partly cloudy. Min Temperature.....Upper 30s. Winds...............Southwest winds around 10 mph. .SUNDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly sunny. Max Temperature.....Mid 60s. Winds...............Southwest winds around 10 mph. .MONDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly sunny. Max Temperature.....Mid 70s. Winds...............South winds 5 to 10 mph. Sunrise: 06:47 AM CDT Sunset: 07:18 PM CDT $$