345
FZUS63 KDTX 011935
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
335 PM EDT Mon Sep 1 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, 30.30 inches, will remain anchored over
the eastern Great Lakes through Tuesday, providing tranquil
boating conditions. Deepening low pressure is forecast across the
northern Great Lakes Wednesday which will drive a strong cold
front across Lake Huron. This system will cause an increase in
winds and waves and provide rain to the region late Wednesday and
Wednesday night.

LCZ460-020345-
Lake St Clair-
335 PM EDT Mon Sep 1 2025

.TONIGHT...East winds 5 to 10 knots. Clear. Waves 2 feet or less.
.TUESDAY...East winds 5 to 10 knots early in the morning becoming
light and variable...then becoming southeast 5 to 10 knots in the
afternoon. Sunny. Waves 2 feet or less.
.TUESDAY NIGHT...South winds 5 to 10 knots. Clear. Waves 2 feet or
less.
.WEDNESDAY...South winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. Mostly sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...South winds 15 to 20 knots becoming southwest 20
to 25 knots after midnight. Partly cloudy with a chance of light
showers until early morning...then showers after midnight. A chance
of waterspouts. Waves 1 to 3 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots
in the afternoon and evening. A chance of waterspouts in the
morning. Mostly cloudy with showers in the morning...then partly
cloudy in the afternoon and evening. Waves 1 to 3 feet.
.FRIDAY...West winds 10 to 15 knots. Partly cloudy. Waves 2 feet or
less.
.SATURDAY...Northwest winds 10 to 15 knots. Mostly clear. 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