SXUS43 KGRB 180401 RECGRB WIZ048-WIZ049-180515- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1101 PM CDT Sun May 17 2026 .TONIGHT...Southeast winds 5 to 10 knots veering south 10 to 20 knots after midnight. Patchy fog through the night. slight chance of thunderstorms late in the evening. Chance of thunderstorms after midnight. Waves 1 foot or less. Lows 53 to 59. .MONDAY...Southwest winds 10 to 20 knots. Chance of thunderstorms in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Waves 1 foot or less. Highs in the mid 70s. .MONDAY NIGHT...South winds 10 to 15 knots. Chance of thunderstorms through the night. Showers after midnight. Waves 1 foot or less. Lows in the lower 60s. .TUESDAY...West winds 15 to 20 knots. Chance of rain showers in the morning. Waves 1 to 3 feet. Highs in the upper 60s. $$