RECMKX Recreational Boater Forecast for Inland Lakes for Southeast Wisconsin National Weather Service Milwaukee/Sullivan WI 1040 CDT Fri Oct 16 2026 ...Lake Monona... .TODAY... Waves...............1.5 to 2 feet. Sky/Weather.........Cloudy until 5 PM, then partly sunny. Chance of rain showers until 2 PM. Max Temperature.....Around 52. Winds...............North winds 15 to 20 mph. Water Temperature...50 degrees. UV Index............2 - Low. .TONIGHT... Waves...............1 to 1.5 feet. Sky/Weather.........Partly cloudy until 11 PM, then clear. Areas of frost after 11 PM until 2 AM, then widespread frost. Min Temperature.....Around 31. Winds...............North winds 10 to 15 mph shifting to the northwest around 5 mph after midnight. Water Temperature...50 degrees. UV Index............2 - Low. .SATURDAY... Waves...............Half foot to 1 foot. Sky/Weather.........Sunny. Areas of frost in the morning. Max Temperature.....Mid 50s. Winds...............Southwest winds 5 to 10 mph. .SUNDAY... Waves...............1 to 1.5 feet. Sky/Weather.........Sunny. Max Temperature.....Lower 60s. Winds...............Southwest winds around 15 mph. .MONDAY... Waves...............Half foot or less. Sky/Weather.........Mostly sunny. Max Temperature.....Mid 60s. Winds...............Southwest winds around 5 mph. Sunrise: 07:12 AM CDT Sunset: 06:14 PM CDT $$