Great Lakes Forecast
Issued by NWS
Issued by NWS
869 FZUS63 KDTX 070730 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 330 AM EDT Tue Jul 7 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, holds over the Great Lakes today before departing into the Appalachia region tomorrow. A low pressure system and cold front will then move across the region Thursday, bringing the next chance for active weather. LCZ460-071530- Lake St Clair- 330 AM EDT Tue Jul 7 2026 .TODAY...North winds 5 to 10 knots. Mostly sunny. Waves 2 feet or less. .TONIGHT...Northeast winds 5 to 10 knots this evening becoming light and variable. Mostly clear. Patchy fog early in the morning. Waves 2 feet or less. .WEDNESDAY...Light and variable winds becoming southeast 5 to 10 knots early in the afternoon. Mostly sunny. Patchy fog early in the morning. Waves 2 feet or less. .WEDNESDAY NIGHT...South winds 5 to 10 knots veering to the southwest after midnight. Mostly clear. Waves 2 feet or less. .THURSDAY...Southwest winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon...then becoming west 5 to 10 knots in the evening. Mostly sunny in the morning...then a chance of showers and thunderstorms in the afternoon. Partly cloudy with light showers likely and a chance of thunderstorms in the evening. Waves 2 feet or less. .FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy. Showers likely and a chance of thunderstorms. Waves 2 feet or less. .SATURDAY...Northeast winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. $$ KDK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes