Great Lakes Forecast
Issued by NWS
Issued by NWS
616 FZUS63 KDTX 170139 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 939 PM EDT Thu Jul 16 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...Canadian wildfire smoke persists tonight amidst high pressure influence. The next weak low pressure systems arrive Friday bringing a round of showers and thunderstorms late in the day and overnight. This will be followed by a secondary low on Saturday tracking across The Straits into northern Lake Huron with additional unsettled weather. LCZ460-170945- Lake St Clair- 939 PM EDT Thu Jul 16 2026 ...DENSE SMOKE ADVISORY IN EFFECT UNTIL 4 PM EDT FRIDAY... .REST OF TONIGHT...East winds 5 to 10 knots by midnight becoming light and variable. Cloudy...smoke. Waves 2 feet or less. .FRIDAY...Light and variable winds becoming southeast 10 to 15 knots. Cloudy in the morning becoming mostly sunny. Smoke. Waves 2 feet or less. .FRIDAY NIGHT...South winds 10 to 15 knots veering to the southwest after midnight. Mostly clear. Smoke early in the evening...then areas of smoke by midnight. Waves 2 feet or less. .SATURDAY...Southwest winds 10 to 15 knots becoming west 15 to 20 knots early in the afternoon. A chance of light showers until late afternoon...then showers and a chance of thunderstorms early in the afternoon. Waves 1 to 3 feet. .SATURDAY NIGHT...North winds 15 to 20 knots. Showers and a chance of thunderstorms early in the evening. Waves 1 to 3 feet. .SUNDAY...North winds 10 to 15 knots becoming northeast 5 to 10 knots in the afternoon and evening. Sunny becoming mostly clear. Waves 2 feet or less. .MONDAY...South winds 15 to 20 knots. Partly cloudy. Showers likely and a chance of thunderstorms. Waves 2 feet or less. .TUESDAY...Northwest winds 15 to 20 knots. Partly cloudy. Showers likely and a chance of thunderstorms. Waves 1 to 3 feet. $$ SC Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes