RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1530 CDT Wed Jul 2 2025 ...Sinissippi Lake... .TONIGHT... Waves...............Half foot or less. Sky/Weather.........Mostly sunny until 8 PM, then mostly clear. Slight chance of thunderstorms. Min Temperature.....Around 63. Winds...............West winds 5 to 10 mph in the afternoon and evening becoming light. Water Temperature...75 degrees. UV Index............10 - Very High. .THURSDAY... Waves...............Nearly calm. Sky/Weather.........Mostly sunny. Max Temperature.....Around 88. Winds...............Southwest winds up to 5 mph shifting to the south in the afternoon. Water Temperature...75 degrees. UV Index............10 - Very High. .THURSDAY NIGHT... Waves...............Half foot to 1 foot. Sky/Weather.........Partly cloudy. Chance of thunderstorms. Min Temperature.....Mid 60s. Winds...............Southeast winds around 5 mph. .INDEPENDENCE DAY... Waves...............Half foot or less. Sky/Weather.........Sunny. Max Temperature.....Lower 90s. Winds...............Southwest winds 5 to 10 mph. .SATURDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Mostly sunny. Max Temperature.....Lower 90s. Winds...............Southwest winds around 10 mph. Sunrise: 05:19 AM CDT Sunset: 08:39 PM CDT $$