RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1040 CDT Fri Jul 17 2026 ...Lake Monona... .TODAY... Waves...............Half foot or less. Sky/Weather.........Mostly sunny. Slight chance of thunderstorms after 11 AM. Max Temperature.....Around 91. Winds...............Southwest winds around 5 mph. Water Temperature...77 degrees. UV Index............6 - High. .TONIGHT... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly clear. Min Temperature.....Around 74. Winds...............Southwest winds 5 to 10 mph. Water Temperature...77 degrees. UV Index............6 - High. .SATURDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Sunny. Max Temperature.....Upper 80s. Winds...............Northwest winds around 10 mph. .SUNDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Mid 80s. Winds...............Southeast winds around 5 mph. .MONDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Partly sunny. Chance of showers in the morning, then chance of thunderstorms in the afternoon. Max Temperature.....Upper 80s. Winds...............Southwest winds 10 to 15 mph. Sunrise: 05:34 AM CDT Sunset: 08:33 PM CDT $$