


Great Lakes Forecast
Issued by NWS
Issued by NWS
524 FZUS63 KDTX 070734 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 334 AM EDT Tue Oct 7 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 cold front, average pressure 30.00 inches, will move across southern Michigan and into Lake Erie today. Showers and scattered thunderstorms will occur along this front. High pressure, 30.50 inches, will expand into the Great Lakes region from the northwest on Wednesday. This high will influence the region through Thursday. LCZ460-071545- Lake St Clair- 334 AM EDT Tue Oct 7 2025 .TODAY...Southwest winds 10 to 15 knots becoming west 5 to 10 knots late in the morning...then becoming north 10 to 15 knots in the afternoon. Mostly cloudy. Scattered thunderstorms early in the morning. Scattered showers in the morning. Numerous light showers in the afternoon. Waves 2 feet or less. .TONIGHT...North winds 10 to 15 knots increasing to 15 to 20 knots early in the morning. Mostly cloudy with scattered light showers early in the evening...then mostly clear in the late evening and overnight. Waves 1 to 3 feet. .WEDNESDAY...North winds 15 to 20 knots diminishing to 10 to 15 knots early in the afternoon. Mostly sunny. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Clear. Waves 2 feet or less. .THURSDAY...East winds 5 to 10 knots. Clear. Waves 2 feet or less. .FRIDAY...South winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .SATURDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. $$ SC Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes