SXUS43 KGRB 040621 RECGRB WIZ048-WIZ049-040900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 121 AM CDT Mon May 4 2026 .REST OF THE NIGHT...Southwest winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Lows in the upper 40s. .MONDAY...Southwest winds 10 to 20 knots with gusts to around 35 knots. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. Highs in the upper 60s. .MONDAY NIGHT...Northwest winds 10 to 15 knots. Slight chance of rain showers in the evening. Waves 1 foot or less. Lows in the lower 40s. .TUESDAY...Northwest winds 10 to 15 knots. Mostly sunny. Waves 1 foot or less. Highs in the lower 50s. $$