


Great Lakes Forecast
Issued by NWS
Issued by NWS
602 FZUS63 KDTX 051342 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 942 AM EDT Sun Oct 5 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...Low pressure, 29.40 inches, will lift from northern Ontario into James Bay tonight. This system will force a cold front across Lake Huron on Monday, average pressure 30.00 inches. This front will settle into Lake Erie on Tuesday and will bring showers and a few thunderstorms. High pressure will then expand across the region from the northwest on Wednesday. LCZ460-052200- Lake St Clair- 942 AM EDT Sun Oct 5 2025 .REST OF TODAY...South winds 5 to 10 knots. Sunny. Waves 2 feet or less. .TONIGHT...South winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. .MONDAY...Southwest winds 10 to 15 knots. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy until early morning. A chance of light showers until early morning. A chance of thunderstorms in the late evening and overnight. Showers after midnight. Waves 2 feet or less. .TUESDAY...West winds 10 to 15 knots veering to the north in the afternoon and evening. Becoming partly cloudy in the evening. Showers. Waves 2 feet or less. .WEDNESDAY...Northeast winds 10 to 15 knots. Clear. Waves 2 feet or less. .THURSDAY...East winds 10 to 15 knots. Clear. Waves 2 feet or less. $$ TF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes