SXUS43 KGRB 150401 RECGRB WIZ048-WIZ049-150515- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1101 PM CDT Wed Oct 14 2026 .TONIGHT...East winds 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Near steady temperature in the lower 50s. .THURSDAY...East winds around 10 knots. Slight chance of rain showers in the morning, then rain showers in the afternoon. Waves 1 foot or less. Highs in the upper 50s. .THURSDAY NIGHT...Northeast winds 5 to 20 knots backing northwest 15 to 25 knots after midnight. Rain showers in the evening, then rain showers likely after midnight. Waves 1 foot or less building to 3 to 5 feet after midnight. Lows in the upper 40s. .FRIDAY...Northwest winds 20 to 25 knots. Rain likely in the morning. Waves 3 to 6 feet. Highs in the lower 50s. $$