SXUS43 KGRB 200615 RECGRB WIZ048-WIZ049-200900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 115 AM CDT Wed Aug 20 2025 .REST OF THE NIGHT...Northeast winds 5 to 10 knots. Patchy fog. slight chance of sprinkles. Waves less than 1 foot. Near steady temperature in the lower 70s. .WEDNESDAY...Northeast winds 5 to 10 knots. Patchy fog in the morning. slight chance of sprinkles in the morning, then slight chance of showers in the afternoon. Waves 1 foot or less. Highs in the mid 70s. .WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Lows in the mid 60s. .THURSDAY...Northeast winds up to 10 knots. Sunny. Waves less than 1 foot. Highs in the mid 70s. $$