SXUS43 KGRB 230051 RECGRB WIZ048-WIZ049-230200- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 751 PM CDT Sat Aug 22 2026 .TONIGHT...North winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Lows around 60. .SUNDAY...Northwest winds around 10 knots. Sunny in the morning then becoming partly sunny. Waves 1 foot or less. Highs in the mid 70s. .SUNDAY NIGHT...North winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Lows in the mid 50s. .MONDAY...Northwest winds up to 5 knots. Sunny. Waves 1 foot or less. Highs in the mid 70s. $$