Great Lakes Forecast
Issued by NWS
Issued by NWS
706 FZUS63 KDTX 182132 AAA GLFSC Lake St Clair Forecast...UPDATED National Weather Service Detroit/Pontiac MI 532 PM EDT Sat Jul 18 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...A low pressure system tracking through the northern lakes region will drag a cold front through the eastern lakes through this evening. High pressure will then build in tonight and remain across the region through the rest of the weekend. LCZ460-190545- Lake St Clair- 532 PM EDT Sat Jul 18 2026 .TONIGHT...North winds 15 to 20 knots diminishing to 10 to 15 knots early in the morning. Mostly clear. Areas of smoke in the evening...then patchy smoke after midnight. Waves 1 to 3 feet. .SUNDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and afternoon. Mostly sunny. Patchy smoke until late afternoon. Waves 2 feet or less. .SUNDAY NIGHT...Northeast winds 5 to 10 knots becoming light and variable. Clear. Waves 2 feet or less. .MONDAY...South winds 5 to 10 knots increasing to 10 to 15 knots early in the afternoon. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...South winds 15 to 20 knots. Partly cloudy ...then showers after midnight. Waves 1 to 3 feet. .TUESDAY...Southwest winds 20 to 25 knots becoming west 15 to 20 knots in the afternoon...then veering to the northwest in the evening. Mostly cloudy in the morning becoming mostly clear in the evening. Light showers and a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...North winds 20 to 25 knots. Mostly clear. Waves 2 to 4 feet. .THURSDAY...Southeast winds 5 to 10 knots. Clear. Waves 2 feet or less. $$ SC Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes