SXUS43 KGRB 191542 RECGRB WIZ048-WIZ049-192100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1041 AM CDT Sun Apr 19 2026 .TODAY...Northwest winds 10 to 15 knots. Slight chance of snow showers late in the morning, then chance of sprinkles in the afternoon. Waves less than 1 foot. Highs in the mid 40s. .TONIGHT...Northeast winds 5 to 15 knots. Partly cloudy. Waves less than 1 foot. Lows in the upper 20s. .MONDAY...Southwest winds 5 to 10 knots. Sunny. Waves less than 1 foot. Highs in the upper 40s. .MONDAY NIGHT...South winds 10 to 15 knots. Mostly cloudy in the evening then clearing. Waves less than 1 foot. Lows around 40. $$