SXUS43 KGRB 201526 RECGRB WIZ048-WIZ049-202100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1026 AM CDT Sat Jun 20 2026 .TODAY...Northwest winds 10 to 15 knots. Slight chance of thunderstorms in the afternoon. Waves 1 foot or less. Highs in the lower 70s. .TONIGHT...Northwest winds 5 to 10 knots veering east after midnight. Slight chance of rain showers in the evening. Waves 1 foot or less. Lows in the mid 50s. .SUNDAY...East winds up to 10 knots. Partly sunny. Waves less than 1 foot. Highs in the lower 70s. .SUNDAY NIGHT...Northeast winds 5 to 15 knots. Mostly cloudy. Waves 1 foot or less. Lows in the mid 50s. $$