Great Lakes Forecast
Issued by NWS
Issued by NWS
923 FZUS63 KDTX 190741 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 341 AM EDT Wed Aug 19 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...High pressure, 30.00 inches, builds in tonight and Thursday providing light winds. Showers and thunderstorm chances increase Friday evening and especially Saturday ahead of the next cold front. LCZ460-191545- Lake St Clair- 341 AM EDT Wed Aug 19 2026 .TODAY...West winds 10 to 15 knots becoming northwest 5 to 10 knots in the late morning and early afternoon...then veering to the northeast late in the afternoon. Partly sunny. Waves 2 feet or less. .TONIGHT...Northeast winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. .THURSDAY...Northeast winds 5 to 10 knots. Partly sunny. Waves 2 feet or less. .THURSDAY NIGHT...East winds 5 to 10 knots. Clear. Waves 2 feet or less. .FRIDAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon and evening. Mostly clear. Waves 2 feet or less. .SATURDAY...Northwest winds 5 to 10 knots. Partly cloudy. Showers likely and a chance of thunderstorms. Waves 2 feet or less. .SUNDAY...North winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. $$ SF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes