981
FZUS63 KDTX 311937
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
337 PM EDT Sat Oct 31 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...High pressure, 30.50 inches, centered over the eastern
Great Lakes today, will expand into the mid Atlantic on Sunday
while increasing to 30.60 inches. This high will influence the
region through the weekend, sustaining relatively light winds. A
slow moving deepening low pressure system will move from the
central Plains Monday to northern Minnesota Tuesday. This system
will drag a slow moving cold front into the Great Lakes region
Tuesday night into Wednesday as the low lifts into northern
Ontario.

LCZ460-010345-
Lake St Clair-
337 PM EDT Sat Oct 31 2026

.TONIGHT...Southeast winds 5 to 10 knots. Mostly cloudy. Waves 2
feet or less.
.SUNDAY...South winds 5 to 10 knots until late afternoon becoming
light and variable. Mostly cloudy. Waves 2 feet or less.
.SUNDAY NIGHT...Light and variable winds. Partly cloudy becoming
mostly cloudy by midnight becoming partly cloudy. Waves 2 feet or
less.
.MONDAY...South winds 5 to 10 knots. Partly sunny. Waves 2 feet or
less.
.MONDAY NIGHT...South winds 10 to 15 knots. Mostly cloudy. A chance
of light rain after midnight. Waves 2 feet or less.
.TUESDAY...South winds 10 to 15 knots increasing to 20 to 25 knots.
Mostly cloudy becoming partly sunny in the afternoon becoming mostly
cloudy. Waves 1 to 3 feet.
.WEDNESDAY...South winds 20 to 25 knots. Mostly cloudy. Light rain
likely. Waves 2 to 4 feet.
.THURSDAY...North winds 10 to 15 knots. Partly cloudy. A chance of
light rain. Waves 2 feet or less.

$$

SF

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

Graphical marine forecasts are available at weather.gov/greatlakes