SXUS43 KGRB 151821 RECGRB WIZ048-WIZ049-152100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 121 PM CDT Thu Oct 15 2026 ...FREEZE WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... .THIS AFTERNOON...East winds around 10 knots. Rain. Waves 1 foot or less. Near steady temperature in the upper 50s. .TONIGHT...Northeast winds 5 to 20 knots becoming northwest 20 to 30 knots after midnight. Rain in the evening, then rain likely after midnight. Waves 1 to 3 feet building to 3 to 6 feet after midnight. Lows in the upper 40s. .FRIDAY...North winds 20 to 25 knots. Rain likely in the morning, then chance of rain in the afternoon. Waves 4 to 7 feet. Near steady temperature in the upper 40s. .FRIDAY NIGHT...North winds 10 to 25 knots backing northwest 5 to 15 knots after midnight. Mostly clear. Waves 3 to 5 feet. Lows in the mid 30s. $$