FZUS63 KDTX 221342 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 942 AM EDT Sat Aug 22 2026 Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...A cold front will move across the Great Lakes this morning which will veer wind direction to the northwest. Showers and thunderstorms are expected along and ahead of the front. Post-frontal northwest flow leads to gusty winds through the day on Sunday. LCZ460-222145- Lake St Clair- 942 AM EDT Sat Aug 22 2026 .REST OF TODAY...Southwest winds 5 to 10 knots. Light showers likely early in the afternoon. Thunderstorms likely in the afternoon. Showers late in the afternoon. Waves 2 feet or less. .TONIGHT...Northwest winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and overnight. Mostly cloudy with showers likely and a chance of thunderstorms early in the evening...then partly cloudy in the late evening and overnight. Waves 1 to 3 feet. .SUNDAY...Northwest winds 15 to 20 knots. Partly sunny. A chance of light showers early in the afternoon. Waves 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots. Partly cloudy. Waves 1 to 3 feet. .MONDAY...Northwest winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. .TUESDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...South winds 10 to 15 knots. Partly cloudy. A chance of showers. Waves 2 feet or less. $$ DRK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes