


Great Lakes Forecast
Issued by NWS
Issued by NWS
361 FZUS63 KDTX 080146 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 946 PM EDT Tue Oct 7 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...High pressure, 30.50 inches, expands into the Great Lakes from the northwest on Wednesday. This high will influence the region through Thursday. The next cold front arrives over the western Great Lakes Thursday night into early Friday. LCZ460-081000- Lake St Clair- 946 PM EDT Tue Oct 7 2025 .REST OF TONIGHT...North winds 10 to 15 knots increasing to 15 to 20 knots early in the morning. Partly cloudy late in the evening then clearing. Waves 1 to 3 feet. .WEDNESDAY...North winds 15 to 20 knots diminishing to 10 to 15 knots in the afternoon. Mostly sunny. Waves 1 to 3 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots becoming northeast 10 to 15 knots in the late evening and overnight. Clear. Waves 2 feet or less. .THURSDAY...East winds 5 to 10 knots. Sunny. Waves 2 feet or less. .THURSDAY NIGHT...East winds 5 to 10 knots. Clear. Waves 2 feet or less. .FRIDAY...Light and variable winds becoming south 5 to 10 knots in the afternoon...then becoming light and variable in the evening. Mostly clear. Waves 2 feet or less. .SATURDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .SUNDAY...Southeast winds 5 to 10 knots. Clear. 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