SXUS43 KGRB 231916 RECGRB WIZ048-WIZ049-240900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 216 PM CDT Sun Aug 23 2026 .REST OF THE AFTERNOON...Northwest winds around 10 knots. Partly sunny. Waves 1 foot or less. Near steady temperature in the lower 70s. .TONIGHT...North winds 5 to 10 knots. Mostly clear. Waves 1 foot or less. Lows in the lower 50s. .MONDAY...Northwest winds up to 5 knots. Sunny. Waves 1 foot or less. Highs in the mid 70s. .MONDAY NIGHT...Southwest winds up to 5 knots. Partly cloudy. Waves 1 foot or less. Lows in the upper 50s. .TUESDAY...Southwest winds 5 to 10 knots. Mostly sunny. Waves 1 foot or less. Highs around 80. $$