SXUS43 KGRB 051656 RECGRB WIZ048-WIZ049-052100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1156 AM CDT Wed Aug 5 2026 .THIS AFTERNOON...Northwest winds around 5 knots. Slight chance of thunderstorms. Waves 1 foot or less. Highs in the mid 70s. .TONIGHT...Southwest winds up to 5 knots. Slight chance of thunderstorms in the evening. areas of fog after midnight. Waves less than 1 foot. Lows in the lower 60s. .THURSDAY...Southeast winds up to 5 knots veering south in the afternoon. Areas of fog in the morning. Waves less than 1 foot. Highs in the upper 70s. .THURSDAY NIGHT...South winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Lows in the lower 60s. $$