Great Lakes Forecast
Issued by NWS
Issued by NWS
023 FZUS63 KDTX 190304 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 1004 PM EST Tue Nov 18 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, 30.20 inches, moves into the Great Lakes Wednesday ensuring dry conditions and light winds. A weak cold front tracks across the region Thursday night, supporting organized southwest flow and increasing rain chances. LCZ460-191115- Lake St Clair- 1004 PM EST Tue Nov 18 2025 .REST OF TONIGHT...Northeast winds 5 to 10 knots. Mostly cloudy this evening becoming partly cloudy. Waves 2 feet or less. .WEDNESDAY...Northeast winds 5 to 10 knots until late afternoon becoming light and variable. Mostly sunny until late afternoon becoming mostly cloudy. Waves 2 feet or less. .WEDNESDAY NIGHT...Light and variable winds. Mostly cloudy until early morning becoming partly cloudy. Waves nearly calm. .THURSDAY...Light and variable winds becoming south 5 to 10 knots in the late morning and afternoon. Mostly cloudy. Waves 2 feet or less. .THURSDAY NIGHT...South winds 5 to 10 knots becoming southwest 10 to 15 knots in the late evening and overnight. Mostly cloudy with a chance of light rain. Waves 2 feet or less. .FRIDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the afternoon and evening. Partly sunny becoming mostly sunny in the afternoon becoming partly cloudy. Waves 2 feet or less. .SATURDAY...South winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .SUNDAY...West winds 10 to 15 knots. Mostly 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