FZUS63 KDTX 091912 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 312 PM EDT Fri May 9 2025 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...High pressure, 30.20 inches, continues to bring dry weather and lighter winds across the Great Lakes. A cold front will pass through tomorrow morning and afternoon, veering winds from southwest to northeast and bringing some elevated winds through the Saginaw Bay. Otherwise, high pressure settles back in late Saturday into Sunday, maintaining tranquil conditions. LCZ460-100315- Lake St Clair- 312 PM EDT Fri May 9 2025 .TONIGHT...Northeast winds 5 to 10 knots veering to the southwest after midnight. Clear. Waves 2 feet or less. .SATURDAY...Southwest winds 5 to 10 knots becoming northwest 10 to 15 knots late in the afternoon. Mostly sunny. Waves 2 feet or less. .SATURDAY NIGHT...North winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Clear. Waves 2 feet or less. .SUNDAY...Northeast winds 5 to 10 knots veering to the east early in the afternoon. Sunny. Waves 2 feet or less. .SUNDAY NIGHT...East winds 5 to 10 knots. Clear. Waves 2 feet or less. .MONDAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the evening. Mostly sunny becoming partly cloudy. Waves 2 feet or less. .TUESDAY...Southeast winds 10 to 15 knots. Mostly cloudy with a chance of rain. Waves 2 feet or less. .WEDNESDAY...Southeast winds 5 to 10 knots. Partly cloudy. A chance of rain. Waves 2 feet or less. $$ AM Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes