Great Lakes Forecast
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FZUS63 KDTX 200840
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
340 AM EST Thu Nov 20 2025

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 weak cold front, 29.90 inches, tracks across the
region Thursday night, supporting moderate preceding southwest
winds and renewed colder northwest winds following. High
pressure, 30.10 inches, then slides across the central Great
Lakes to close out the week.

LCZ460-201645-
Lake St Clair-
340 AM EST Thu Nov 20 2025

.TODAY...Light and variable winds becoming south 5 to 10 knots in
the afternoon. Mostly cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 5 to 10 knots. Cloudy. Waves 2 feet or
less.
.FRIDAY...West winds 5 to 10 knots. Mostly cloudy. Waves 2 feet or
less.
.FRIDAY NIGHT...Northwest winds 5 to 10 knots becoming north 10 to
15 knots in the late evening and overnight. Mostly cloudy until
early morning becoming partly cloudy. Waves 2 feet or less.
.SATURDAY...Northwest winds 5 to 10 knots backing to the southwest
in the evening. Mostly clear. Waves 2 feet or less.
.SUNDAY...West winds 10 to 15 knots. Partly cloudy. Waves 2 feet or
less.
.MONDAY...Southeast winds 10 to 15 knots. Partly cloudy. Waves 2
feet or less.

$$

DRK

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

Graphical marine forecasts are available at weather.gov/greatlakes