SXUS43 KGRB 191622 RECGRB WIZ048-WIZ049-192100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1122 AM CDT Tue May 19 2026 .TODAY...West winds around 15 knots. Chance of rain showers late in the morning, then slight chance of rain showers in the afternoon. Waves 1 foot or less. Highs in the upper 60s. .TONIGHT...Northwest winds 10 to 15 knots. Mostly cloudy. Waves 1 foot or less. Lows in the upper 40s. .WEDNESDAY...North winds 5 to 10 knots. Sunny. Waves 1 foot or less. Highs in the upper 50s. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Lows in the lower 40s. $$