SXUS43 KGRB 222231 RECGRB WIZ048-WIZ049-230900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 531 PM CDT Wed Apr 22 2026 .REST OF THE AFTERNOON...East winds around 5 knots. Mostly sunny. Waves less than 1 foot. Near steady temperature in the lower 60s. .TONIGHT...Southeast winds 5 to 10 knots. Mostly clear. Waves less than 1 foot. Lows in the upper 40s. .THURSDAY...South winds 10 to 20 knots. Mostly sunny. Waves less than 1 foot. Highs 67 to 72. .THURSDAY NIGHT...South winds 10 to 15 knots. Chance of thunderstorms through the night. Rain showers after midnight. Waves less than 1 foot. Lows in the mid 50s. .FRIDAY...South winds around 10 knots veering west in the afternoon. Rain showers and chance of thunderstorms in the morning, then rain showers likely in the afternoon. Waves less than 1 foot. Highs in the lower 60s. $$