Great Lakes Forecast
Issued by NWS
Issued by NWS
719 FZUS63 KDTX 160150 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 950 PM EDT Sat Aug 15 2026 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 of 30.20 inches moves over the Northeast through today as low pressure of 29.6 inches moves east across Ontario. As the low tracks east, it will push a cold front across the central Great Lakes region late this evening. This cold front brings in a 6-8 hour bout of 20-25 knot northwest winds tonight into early Monday morning and chances for thunderstorms this afternoon and evening. LCZ460-161000- Lake St Clair- 950 PM EDT Sat Aug 15 2026 .REST OF TONIGHT...Southeast winds 10 to 15 knots. Mostly cloudy becoming partly cloudy after midnight becoming mostly cloudy. A chance of light showers after midnight. Waves 2 feet or less. .SUNDAY...Southwest winds 5 to 10 knots. Mostly cloudy. A chance of light showers early in the afternoon. A chance of thunderstorms in the afternoon. Light showers likely late in the afternoon. Waves 2 feet or less. .SUNDAY NIGHT...West winds 5 to 10 knots becoming northwest 10 to 15 knots in the late evening and overnight. Partly cloudy. A chance of thunderstorms early in the evening. A chance of light showers . Waves 2 feet or less. .MONDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots early in the afternoon. Partly sunny until late afternoon then clearing. Waves 2 feet or less. .MONDAY NIGHT...Northeast winds 5 to 10 knots veering to the southeast by midnight...then becoming light and variable after midnight. Clear. Waves 2 feet or less. .TUESDAY...Light and variable winds becoming southwest 10 to 15 knots in the afternoon and evening. Sunny in the morning becoming mostly clear. Waves 2 feet or less. .WEDNESDAY...North winds 10 to 15 knots. Partly cloudy. Showers likely and a chance of thunderstorms. Waves 2 feet or less. .THURSDAY...Northeast winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. $$ CB Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes