RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1531 CDT Mon Jun 30 2025 ...Rock Lake... .TONIGHT... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly sunny until 11 PM, then clear. Slight chance of thunderstorms. Min Temperature.....Around 62. Winds...............West winds 5 to 10 mph. Water Temperature...73 degrees. UV Index............9 - Very High. .TUESDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Sunny. Max Temperature.....Around 83. Winds...............Northwest winds around 10 mph. Water Temperature...73 degrees. UV Index............9 - Very High. .TUESDAY NIGHT... Waves...............Nearly calm. Sky/Weather.........Mostly clear. Min Temperature.....Mid 60s. Winds...............West winds around 5 mph. .WEDNESDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Mid 80s. Winds...............West winds around 5 mph. .THURSDAY... Waves...............Nearly calm. Sky/Weather.........Sunny. Max Temperature.....Upper 80s. Winds...............Southwest winds around 5 mph. Sunrise: 05:20 AM CDT Sunset: 08:39 PM CDT $$