Great Lakes Forecast
Issued by NWS
Issued by NWS
167 FZUS63 KDTX 151353 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 953 AM EDT Tue Sep 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...Low pressure, 29.30 inches, tracks across northern Ontario today which elevates wind gusts to gale force across central and northern Lake Huron. A Gale Warning is in effect there through this afternoon. The low pressure system ushers a weak cold front across the region Tuesday night, then high pressure passes across northern Ontario on Wednesday. LCZ460-152200- Lake St Clair- 953 AM EDT Tue Sep 15 2026 .REST OF TODAY...South winds 15 to 20 knots diminishing to 10 to 15 knots late in the afternoon. Partly sunny. Waves 1 to 3 feet. .TONIGHT...South winds 10 to 15 knots becoming west 5 to 10 knots by midnight...then veering to the north early in the morning. Showers likely in the evening. A chance of thunderstorms. Showers after midnight. Waves 2 feet or less. .WEDNESDAY...North winds 10 to 15 knots becoming northeast 5 to 10 knots early in the afternoon. Mostly cloudy. Waves 2 feet or less. .WEDNESDAY NIGHT...Northeast winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. Partly cloudy ... then mostly cloudy with a chance of light showers after midnight. Waves 2 feet or less. .THURSDAY...North winds 5 to 10 knots. Mostly cloudy with a chance of light showers in the morning...then partly cloudy in the afternoon and evening. Waves 2 feet or less. .FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .SATURDAY...South winds 15 to 20 knots. Showers and a chance of thunderstorms. Waves 1 to 3 feet. $$ DRK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes