


Great Lakes Forecast
Issued by NWS
Issued by NWS
399 FZUS63 KDTX 140157 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 957 PM EDT Wed Aug 13 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, 30.10 inches, over northwest Ontario looks to dominate our weather into the first half of the weekend, supporting light north-northeast winds and dry conditions. LCZ460-141000- Lake St Clair- 957 PM EDT Wed Aug 13 2025 .REST OF TONIGHT...Northeast winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Mostly clear. Waves 2 feet or less. .THURSDAY...Northeast winds 5 to 10 knots. Mostly sunny. Waves 2 feet or less. .THURSDAY NIGHT...Northeast winds 5 to 10 knots. Clear. Waves 2 feet or less. .FRIDAY...Light and variable winds becoming southeast 5 to 10 knots early in the afternoon. Sunny. Waves 2 feet or less. .FRIDAY NIGHT...South winds 5 to 10 knots. Clear. Waves 2 feet or less. .SATURDAY...Light and variable winds becoming south 5 to 10 knots in the afternoon and evening. Mostly sunny...then mostly clear with a chance of light showers in the evening. Waves 2 feet or less. .SUNDAY...North winds 10 to 15 knots. Partly cloudy. A chance of showers and thunderstorms. Waves 2 feet or less. .MONDAY...Southeast winds 10 to 15 knots. Mostly clear. A chance of showers and thunderstorms. Waves 2 feet or less. $$ AA Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes