SXUS43 KGRB 090607 RECGRB WIZ048-WIZ049-090900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 107 AM CDT Fri May 9 2025 ...FROST ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... .REST OF THE NIGHT...East winds up to 5 knots. Areas of frost. Waves 1 foot or less. Near steady temperature in the mid 30s. .FRIDAY...South winds up to 5 knots. Areas of frost in the morning. Waves less than 1 foot. Highs in the lower 60s. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Slight chance of rain showers after midnight. Waves less than 1 foot. Lows in the lower 50s. .SATURDAY...Northeast winds around 10 knots. Sunny. Waves 1 foot or less. Highs in the lower 60s. $$