SXUS43 KGRB 151647 RECGRB WIZ048-WIZ049-152100- Recreational Forecast for Lake Winnebago National Weather Service Green Bay WI 1147 AM CDT Wed Apr 15 2026 .THIS AFTERNOON...Northeast winds around 5 knots. Patchy fog through the day. chance of rain showers late in the morning. Chance of thunderstorms in the afternoon. Waves less than 1 foot. Near steady temperature in the mid 50s. .TONIGHT...Northeast winds around 5 knots. Patchy fog in the evening. Areas of fog after midnight. rain likely and chance of thunderstorms through the night. Waves less than 1 foot. Lows in the upper 40s. .THURSDAY...Northeast winds around 5 knots. Areas of fog in the morning. chance of rain and slight chance of thunderstorms in the morning. Waves less than 1 foot. Highs in the upper 50s. .THURSDAY NIGHT...Southeast winds around 5 knots. Partly cloudy. Waves less than 1 foot. Lows in the mid 40s. $$