SXUS43 KGRB 150156 RECGRB WIZ048-WIZ049-150300- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 856 PM CDT Wed Oct 14 2026 .TONIGHT...East winds 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Lows in the lower 50s. .THURSDAY...East winds 5 to 10 knots. Rain in the afternoon. Waves 1 foot or less. Highs in the upper 50s. .THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming northwest 15 to 25 knots after midnight. Rain. 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. $$