SXUS43 KGRB 051901 RECGRB WIZ048-WIZ049-060900- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 201 PM CDT Tue May 5 2026 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM CDT WEDNESDAY... .REST OF THE AFTERNOON...West winds 10 to 15 knots. Mostly sunny. Waves 1 foot or less. Near steady temperature in the mid 50s. .TONIGHT...Northwest winds 5 to 15 knots. Areas of frost after midnight. Waves 1 foot or less. Lows in the upper 30s. .WEDNESDAY...Northwest winds 5 to 10 knots. Areas of frost in the morning. Waves 1 foot or less. Highs in the lower 50s. .WEDNESDAY NIGHT...West winds 5 to 10 knots. Partly cloudy. Waves 1 foot or less. Lows in the upper 30s. .THURSDAY...West winds 5 to 10 knots. Areas of frost in the morning. chance of rain showers through the day. Waves 1 foot or less. Highs in the mid 50s. $$