Great Lakes Forecast
Issued by NWS
Issued by NWS
226 FZUS63 KDTX 300759 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 359 AM EDT Wed Sep 30 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, 30.10 inches, exits as southwest winds slowly increase ahead of a cold front. This front gets hung up over southern lower Michigan, leading to occasional showers today through Friday. LCZ460-301600- Lake St Clair- 359 AM EDT Wed Sep 30 2026 .TODAY...Southwest winds 5 to 10 knots becoming south 10 to 15 knots late in the morning...then diminishing to 5 to 10 knots in the afternoon. Mostly cloudy. Waves 2 feet or less. .TONIGHT...South winds 10 to 15 knots. Cloudy. Light showers likely. Waves 2 feet or less. .THURSDAY...Southwest winds 10 to 15 knots diminishing to 5 to 10 knots early in the afternoon. Mostly cloudy. Light showers likely early in the morning. Waves 2 feet or less. .THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming northwest 10 to 15 knots after midnight. Showers. Waves 2 feet or less. .FRIDAY...North winds 10 to 15 knots. Mostly cloudy with light showers in the morning...then mostly clear in the afternoon and evening. Waves 2 feet or less. .SATURDAY...East winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. .SUNDAY...Northwest winds 15 to 20 knots. Mostly clear. Waves 2 feet or less. $$ KGK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes