SXUS43 KGRB 190851 RECGRB WIZ048-WIZ049-192100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 351 AM CDT Tue May 19 2026 .EARLY THIS MORNING...South winds 15 to 20 knots. Chance of thunderstorms. Waves 1 foot or less. Lows in the lower 60s. .TODAY...West winds 15 to 20 knots. Chance of thunderstorms in the morning, then chance of sprinkles in the afternoon. Waves 1 to 2 feet. Highs in the upper 60s. .TONIGHT...Northwest winds 10 to 15 knots. Chance of sprinkles in the evening. Waves 1 foot or less. Lows in the upper 40s. .WEDNESDAY...North winds 5 to 10 knots. Mostly sunny. Waves 1 foot or less. Highs in the mid 50s. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Lows in the lower 40s. $$