


Great Lakes Forecast
Issued by NWS
Issued by NWS
686 FZUS63 KDTX 262218 AAA GLFSC Lake St Clair Forecast...UPDATED National Weather Service Detroit/Pontiac MI 618 PM EDT Sat Jul 26 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...The front that has been wavering around the central Great Lakes finally slides south of the region tonight. Weak high pressure then builds in Sunday to maintain dry weather, although a new round of heat and humidity builds through the early week period. LCZ460-270630- Lake St Clair- 618 PM EDT Sat Jul 26 2025 .TONIGHT...Southwest winds 5 to 10 knots. Mostly cloudy. Scattered showers and thunderstorms until early morning...then scattered showers early in the morning. Waves 2 feet or less. .SUNDAY...West winds 5 to 10 knots backing to the southeast early in the afternoon...then becoming light and variable late in the afternoon. Partly sunny. Scattered showers early in the morning. Waves 2 feet or less. .SUNDAY NIGHT...Light and variable winds. Clear. Waves 2 feet or less. .MONDAY...Light and variable winds becoming south 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...Southwest winds 5 to 10 knots veering to the northwest after midnight. Clear. Waves 2 feet or less. .TUESDAY...North winds 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Northeast winds 10 to 15 knots. Partly cloudy. A chance of showers and thunderstorms. Waves 2 feet or less. .THURSDAY...North winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. $$ BT Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes