SXUS43 KGRB 250530 RECGRB WIZ048-WIZ049-250900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1230 AM CDT Sat Oct 25 2025 .REST OF THE NIGHT...South winds around 5 knots. Mostly cloudy. Waves less than 1 foot. Lows 32 to 38. .SATURDAY...South winds 5 to 10 knots. Chance of rain showers in the morning. Slight chance of rain showers in the afternoon. Waves less than 1 foot. Highs in the lower 50s. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Partly cloudy. Waves 1 foot or less. Lows in the mid 40s. .SUNDAY...Southeast winds 5 to 15 knots. Sunny. Waves 1 foot or less. Highs in the mid 50s. $$