SXUS43 KGRB 150802 RECGRB WIZ048-WIZ049-152100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 302 AM CDT Wed Apr 15 2026 .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. $$