SXUS43 KGRB 092247 RECGRB WIZ048-WIZ049-100900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 547 PM CDT Fri May 9 2025 .TONIGHT...Southwest winds 5 to 10 knots. Mostly clear. Waves less than 1 foot. Lows in the lower 50s. .SATURDAY...Northeast winds 10 to 15 knots. Sunny. Waves 1 foot or less. Highs in the lower 60s. .SATURDAY NIGHT...East winds 5 to 10 knots. Clear. Waves 1 foot or less. Lows in the lower 40s. .SUNDAY...Southeast winds 5 to 10 knots. Sunny. Waves 1 foot or less. Highs in the upper 60s. $$