Great Lakes Forecast
Issued by NWS
Issued by NWS
611 FZUS63 KDTX 130140 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 940 PM EDT Sat Sep 12 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, will continue to push eastward over northern Ontario as it drags a cold front across the central Great Lakes through Sunday. Northwesterly flow increases on Sunday behind the front. LCZ460-130945- Lake St Clair- 940 PM EDT Sat Sep 12 2026 .REST OF TONIGHT...Southwest winds 5 to 10 knots veering to the west early in the morning. Partly cloudy. Waves 2 feet or less. .SUNDAY...North winds 5 to 10 knots becoming northwest 15 to 20 knots late in the afternoon. Mostly sunny. Waves 2 feet or less. .SUNDAY NIGHT...Northwest winds 20 to 25 knots becoming north 15 to 20 knots after midnight. Mostly cloudy early in the evening then clearing. Waves 1 to 3 feet. .MONDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and early afternoon...then becoming light and variable early in the afternoon. Sunny. Waves 2 feet or less. .MONDAY NIGHT...Southeast winds 5 to 10 knots becoming south 15 to 20 knots. Partly cloudy. Waves 2 feet or less. .TUESDAY...South winds 20 to 25 knots becoming southwest 10 to 15 knots. Partly cloudy. A chance of light showers. Showers likely in the evening. Waves 1 to 3 feet. .WEDNESDAY...Northeast winds 5 to 10 knots. Mostly cloudy. Showers likely. Waves 2 feet or less. .THURSDAY...North winds 10 to 15 knots. Mostly cloudy. Showers likely. Waves 2 feet or less. $$ MR Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes