Great Lakes Forecast
Issued by NWS
Issued by NWS
520 FZUS63 KDTX 310137 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 937 PM EDT Sun Aug 30 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...A warm front develops over the Great Lakes tonight into Monday, bringing an unsettled period with showers and storms. Low pressure forming over the Dakotas slowly tracks across northern Ontario through the midweek. Its cold front is likely to stall across the area on Wednesday. LCZ460-310945- Lake St Clair- 937 PM EDT Sun Aug 30 2026 .REST OF TONIGHT...South winds 5 to 10 knots. Mostly cloudy. A chance of showers and thunderstorms this evening...then a chance of light showers after midnight. Waves 2 feet or less. .MONDAY...Southwest winds 5 to 10 knots becoming south 10 to 15 knots late in the afternoon. Mostly cloudy. A chance of light showers in the morning. Waves 2 feet or less. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy. A chance of light showers after midnight. Waves 2 feet or less. .TUESDAY...Southwest winds 5 to 10 knots. Mostly sunny with a chance of showers and thunderstorms. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Partly cloudy. A chance of light showers early in the evening. A chance of light showers after midnight. Waves 2 feet or less. .WEDNESDAY...Southwest winds 5 to 10 knots. Mostly sunny...then partly cloudy with a chance of showers and thunderstorms in the evening. Waves 2 feet or less. .THURSDAY...Northeast winds 5 to 10 knots. Partly cloudy. A chance of showers and thunderstorms. Waves 2 feet or less. .FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy. A chance of showers. 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