Great Lakes Forecast
Issued by NWS
Issued by NWS
229 FZUS63 KDTX 161948 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 348 PM EDT Sun Aug 16 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...An area of low pressure, 29.80 inches, is tracking east across Ontario this afternoon and will pull 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. High pressure, 30.20 inches, builds in behind the front for Monday and most of Tuesday. LCZ460-170400- Lake St Clair- 348 PM EDT Sun Aug 16 2026 .TONIGHT...West winds 5 to 10 knots becoming northwest 10 to 15 knots in the late evening and overnight. Partly cloudy. A chance of showers and thunderstorms in the evening. Waves 2 feet or less. .MONDAY...Northwest winds 10 to 15 knots becoming north 5 to 10 knots in the afternoon. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...North winds 5 to 10 knots veering to the east by midnight...then becoming light and variable after midnight. Mostly clear. Waves 2 feet or less. .TUESDAY...Southwest winds 5 to 10 knots increasing to 10 to 15 knots early in the afternoon. Mostly sunny. Waves 2 feet or less. .TUESDAY NIGHT...West winds 10 to 15 knots. Partly cloudy. A chance of light showers after midnight. Waves 2 feet or less. .WEDNESDAY...North winds 5 to 10 knots veering to the northeast in the evening. Partly sunny with a chance of showers in the morning...then partly cloudy with a chance of light showers in the afternoon and evening. Waves 2 feet or less. .THURSDAY...Northeast winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. .FRIDAY...South winds 5 to 10 knots. Mostly clear. 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