Great Lakes Forecast
Issued by NWS
Issued by NWS
743 FZUS63 KDTX 221946 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 346 PM EDT Wed Jul 22 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, over Minnesota, will slowly track east through the southern Great Lakes over the next couple of days. Dry weather and generally light winds can be expected for Thursday and Friday. LCZ460-230400- Lake St Clair- 346 PM EDT Wed Jul 22 2026 .TONIGHT...North winds 10 to 15 knots. Partly cloudy in the evening then clearing. Waves 2 feet or less. .THURSDAY...North winds 5 to 10 knots in the morning becoming light and variable. Sunny. Waves 2 feet or less. .THURSDAY NIGHT...Southeast winds 5 to 10 knots becoming light and variable. Mostly clear. Waves 2 feet or less. .FRIDAY...Light and variable winds becoming southeast 5 to 10 knots early in the afternoon. Mostly sunny. Waves 2 feet or less. .FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming light and variable. Clear. Waves 2 feet or less. .SATURDAY...Light and variable winds becoming south 5 to 10 knots in the afternoon and evening. Mostly clear. Waves 2 feet or less. .SUNDAY...East winds 5 to 10 knots. Mostly clear. A chance of showers and thunderstorms. Waves 2 feet or less. .MONDAY...Southwest winds 10 to 15 knots. Partly cloudy. A chance of showers and thunderstorms. Waves 2 feet or less. $$ SF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes