815
FZUS63 KDTX 172042
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
342 PM EST Mon Nov 17 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...High pressure, 30.20 inches, will expand across the
western Great Lake today and across Lower Michigan tonight. This
will result in steadily decreasing winds on the lakes today. The
high will become centered over the northern lakes Tuesday and
Tuesday night as low pressure, 29.90 inches moves across the Ohio
Valley. High pressure will then expand back across the entire
region Wednesday.

LCZ460-180445-
Lake St Clair-
342 PM EST Mon Nov 17 2025

.TONIGHT...Northwest winds 5 to 10 knots. Mostly clear. Waves 2 feet
or less.
.TUESDAY...Light and variable winds becoming east 5 to 10 knots late
in the afternoon. Mostly cloudy. A chance of light snow in the
morning. A chance of light rain in the late morning and afternoon.
Waves 2 feet or less.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Mostly cloudy until
early morning becoming partly cloudy. Waves 2 feet or less.
.WEDNESDAY...Northeast winds 5 to 10 knots until late afternoon
becoming light and variable. Partly sunny. Waves 2 feet or less.
.WEDNESDAY NIGHT...Light and variable winds. Mostly cloudy early in
the evening becoming partly cloudy. Waves nearly calm.
.THURSDAY...Light and variable winds becoming south 5 to 10 knots in
the afternoon...then increasing to 10 to 15 knots in the evening.
Mostly cloudy. Light rain likely in the evening. Waves 2 feet or
less.
.FRIDAY...North winds 10 to 15 knots. Mostly cloudy. Light rain
likely. Waves 2 feet or less.
.SATURDAY...West winds 10 to 15 knots. Partly cloudy. A chance of
light rain. Waves 2 feet or less.

$$

MV

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

Graphical marine forecasts are available at weather.gov/greatlakes