


Great Lakes Forecast
Issued by NWS
Issued by NWS
417 FZUS63 KDTX 011354 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 954 AM EDT Fri Aug 1 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, 30.40 inches, over the Western Great Lakes will slowly weaken and drift eastward through the weekend, supporting light winds into early next week. LCZ460-012200- Lake St Clair- 954 AM EDT Fri Aug 1 2025 .REST OF TODAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 2 feet or less. .TONIGHT...North winds 10 to 15 knots becoming northeast 5 to 10 knots after midnight. Clear. Waves 2 feet or less. .SATURDAY...Northeast winds 5 to 10 knots until late afternoon becoming light and variable. Sunny. Waves 2 feet or less. .SATURDAY NIGHT...Southeast winds 5 to 10 knots until early morning becoming light and variable. Clear. Waves nearly calm. .SUNDAY...Light and variable winds becoming southeast 5 to 10 knots in the afternoon and evening. Clear. Waves 2 feet or less. .MONDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .TUESDAY...East winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. $$ SF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes