SXUS43 KGRB 050106 RECGRB WIZ048-WIZ049-050215- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 806 PM CDT Mon May 4 2026 .TONIGHT...Northwest winds 5 to 15 knots. Partly cloudy. Waves 1 foot or less. Lows in the lower 40s. .TUESDAY...West winds 5 to 15 knots. Mostly sunny. Waves 1 foot or less. Highs in the lower 50s. .TUESDAY NIGHT...Northwest winds 5 to 10 knots. Partly cloudy. Waves 1 foot or less. Lows in the upper 30s. .WEDNESDAY...Northwest winds 5 to 10 knots. Partly sunny. Waves 1 foot or less. Highs around 50. $$