Great Lakes Forecast
Issued by NWS
Issued by NWS
005 FZUS63 KDTX 200840 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 340 AM EST Thu Nov 20 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...A weak cold front, 29.90 inches, tracks across the region Thursday night, supporting moderate preceding southwest winds and renewed colder northwest winds following. High pressure, 30.10 inches, then slides across the central Great Lakes to close out the week. LCZ460-201645- Lake St Clair- 340 AM EST Thu Nov 20 2025 .TODAY...Light and variable winds becoming south 5 to 10 knots in the afternoon. Mostly cloudy. Waves 2 feet or less. .TONIGHT...Southwest winds 5 to 10 knots. Cloudy. Waves 2 feet or less. .FRIDAY...West winds 5 to 10 knots. Mostly cloudy. Waves 2 feet or less. .FRIDAY NIGHT...Northwest winds 5 to 10 knots becoming north 10 to 15 knots in the late evening and overnight. Mostly cloudy until early morning becoming partly cloudy. Waves 2 feet or less. .SATURDAY...Northwest winds 5 to 10 knots backing to the southwest in the evening. Mostly clear. Waves 2 feet or less. .SUNDAY...West winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .MONDAY...Southeast winds 10 to 15 knots. Partly cloudy. 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