


Great Lakes Forecast
Issued by NWS
Issued by NWS
061 FZUS63 KDTX 200132 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 932 PM EDT Sat Jul 19 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...Scattered showers and isolated thunderstorm chances will continue overnight as a cold front moves across the region. High pressure then builds in behind the departing cold front bringing drier conditions late Sunday into Monday. LCZ460-200945- Lake St Clair- 932 PM EDT Sat Jul 19 2025 .REST OF TONIGHT...Southwest winds 5 to 10 knots veering to the west early in the morning. Mostly cloudy this evening becoming partly cloudy. A chance of thunderstorms this evening. Scattered showers in the late evening and early morning. Waves 2 feet or less. .SUNDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots in the afternoon. Partly sunny. Waves 2 feet or less. .SUNDAY NIGHT...Northeast winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. Clear. Waves 2 feet or less. .MONDAY...Northeast winds 5 to 10 knots. Sunny. Waves 2 feet or less. .MONDAY NIGHT...Northeast winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Clear. Waves 2 feet or less. .TUESDAY...East winds 5 to 10 knots veering to the southeast in the evening. Sunny becoming mostly clear. Waves 2 feet or less. .WEDNESDAY...South winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. .THURSDAY...Southwest winds 10 to 15 knots. Mostly clear. A chance of showers and thunderstorms. 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