SXUS43 KGRB 150831 RECGRB WIZ048-WIZ049-152100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 331 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .EARLY THIS MORNING...East winds around 5 knots. Areas of fog. Waves less than 1 foot. Near steady temperature in the mid 50s. .TODAY...Northeast winds around 5 knots. Widespread fog in the morning. Patchy fog in the afternoon. chance of rain showers through the day. Slight chance of thunderstorms in the afternoon. Waves less than 1 foot. Highs in the upper 50s. .TONIGHT...East winds around 5 knots. Patchy fog in the evening. Areas of fog after midnight. rain showers likely and chance of thunderstorms through the night. Waves 1 foot or less. Lows in the upper 40s. .THURSDAY...Northeast winds 5 to 10 knots. Areas of fog in the morning. chance of rain showers through the day. Waves 1 foot or less. Highs in the upper 50s. .THURSDAY NIGHT...Southeast winds around 5 knots. Partly cloudy. Waves less than 1 foot. Lows in the mid 40s. $$