


Great Lakes Forecast
Issued by NWS
Issued by NWS
920 FZUS63 KDTX 160152 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 952 PM EDT Sun Jun 15 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, 30.10 inches, drifting over New England tonight will reach the Atlantic on Monday with a weak surface ridge stalling across the Great Lakes. A warm front then arrives over the Great Lakes on Tuesday with unsettled conditions persisting through the end of the week as several disturbances move through the region. LCZ460-161000- Lake St Clair- 952 PM EDT Sun Jun 15 2025 .REST OF TONIGHT...Northeast winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. .MONDAY...East winds 5 to 10 knots in the morning becoming light and variable...then becoming southeast 5 to 10 knots late in the afternoon. Partly sunny. Waves 2 feet or less. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. .TUESDAY...South winds 5 to 10 knots. Partly sunny. A chance of light showers in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...South winds 10 to 15 knots becoming southwest 5 to 10 knots in the late evening and overnight. Partly cloudy. A chance of light showers in the evening...then a chance of showers and thunderstorms after midnight. Waves 2 feet or less. .WEDNESDAY...Southwest winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon and evening. Partly sunny in the morning becoming mostly cloudy. A chance of showers and thunderstorms in the morning...then showers likely and a chance of thunderstorms in the afternoon and evening. Waves 2 feet or less. .THURSDAY...Northwest winds 10 to 15 knots. Partly cloudy. Showers likely and a chance of thunderstorms. Waves 2 feet or less. .FRIDAY...South winds 10 to 15 knots. Partly cloudy. 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