National Weather Service Marine Forecast FZUS63 KDTX

FZUS63 KDTX 170140
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
940 PM EDT Wed Sep 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
Southern edge of northern Ontario high pressure, 30.30 inches, slides across the central Great Lakes through Thursday. A secondary cold front passes southward through the region Thursday night into early Friday before Plains low pressure arrives this weekend.

LCZ460-170945
Lake St Clair
940 PM EDT Wed Sep 16 2026

REST OF TONIGHT
Northeast winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Cloudy. A chance of light showers. Waves 2 feet or less.

THURSDAY
North winds 5 to 10 knots. Cloudy. A chance of light showers early in the morning. A chance of light showers in the afternoon. Waves 2 feet or less.

THURSDAY NIGHT
North winds 5 to 10 knots. Mostly cloudy early in the evening becoming partly cloudy. A chance of light showers early in the evening. Waves 2 feet or less.

FRIDAY
North winds 10 to 15 knots becoming northeast 5 to 10 knots in the late morning and early afternoon...then increasing to 10 to 15 knots early in the afternoon. Mostly sunny. Waves 2 feet or less.

FRIDAY NIGHT
Northeast winds 10 to 15 knots. Partly cloudy becoming mostly cloudy. Waves 2 feet or less.

SATURDAY
East winds 10 to 15 knots. Showers likely in the morning...then showers and a chance of thunderstorms in the afternoon and evening. Waves 2 feet or less.

SUNDAY
Northeast winds 15 to 20 knots. Mostly cloudy with showers. Waves 1 to 3 feet.

MONDAY
Northeast winds 20 to 25 knots. Mostly cloudy with a chance of showers. Waves 1 to 3 feet.

KDK

Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc

Graphical marine forecasts are available at weather.gov/greatlakes