388
FZUS63 KDTX 151953
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
353 PM EDT Tue Sep 15 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...Low pressure, 29.40 inches, tracks from northern
Ontario into Hudson Bay tonight. It sends a cold front across the
Great Lakes overnight into early Wednesday, with high pressure
then passing across northern Ontario during the day Wednesday.
The cold front stalls near the southern Great Lakes into
Thursday.

LCZ460-160400-
Lake St Clair-
353 PM EDT Tue Sep 15 2026

.TONIGHT...South winds 10 to 15 knots becoming southwest 5 to 10
knots late in the evening...then becoming light and variable after
midnight becoming northwest 5 to 10 knots early in the morning.
Partly cloudy this evening becoming mostly cloudy. A chance of light
showers in the evening. A chance of thunderstorms. Light showers
likely after midnight. Waves 2 feet or less.
.WEDNESDAY...Northeast winds 5 to 10 knots. Mostly cloudy. Waves 2
feet or less.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots diminishing to 5
to 10 knots in the late evening and overnight. Partly cloudy ...
then mostly cloudy with a chance of light showers after midnight.
Waves 2 feet or less.
.THURSDAY...North winds 5 to 10 knots. Mostly cloudy. A chance of
showers until late afternoon. Waves 2 feet or less.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots becoming north 10 to
15 knots in the late evening and overnight. Partly cloudy. Waves 2
feet or less.
.FRIDAY...North winds 10 to 15 knots becoming northeast 5 to 10
knots in the afternoon...then increasing to 10 to 15 knots in the
evening. Partly cloudy. Waves 2 feet or less.
.SATURDAY...Southeast winds 10 to 15 knots. Showers and a chance of
thunderstorms. Waves 2 feet or less.
.SUNDAY...Northeast winds 15 to 20 knots. Mostly cloudy with showers
likely. Waves 1 to 3 feet.

$$

TF

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

Graphical marine forecasts are available at weather.gov/greatlakes