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FZUS63 KDTX 190754
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
354 AM EDT Sat Sep 19 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...A weak low pressure system follows a stalled front
from the central Plains into the Ohio Valley this weekend. A
broad area of high pressure then builds into northern Ontario and
the northern Great Lakes Sunday into Monday.

LCZ460-191600-
Lake St Clair-
354 AM EDT Sat Sep 19 2026

.TODAY...East winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and early afternoon...then becoming southeast 10 to
15 knots late in the afternoon. Mostly cloudy. A chance of light
showers late in the morning. Showers likely early in the afternoon.
A chance of light showers late in the afternoon. Waves 2 feet or
less.
.TONIGHT...East winds 10 to 15 knots diminishing to 5 to 10 knots
after midnight. A chance of light showers in the evening. A chance
of thunderstorms by midnight. Showers after midnight. Patchy fog
early in the morning. Waves 2 feet or less.
.SUNDAY...Northeast winds 10 to 15 knots increasing to 15 to 20
knots early in the afternoon. Mostly cloudy. A chance of showers
early in the morning. Patchy fog until late afternoon. Waves 1 to 3
feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots increasing to 20 to
25 knots after midnight. Partly cloudy. Waves 2 to 4 feet.
.MONDAY...Northeast winds 15 to 20 knots increasing to 30 knots in
the evening. Partly sunny becoming mostly cloudy. Waves 1 to 3 feet
building to 2 to 4 feet in the evening. A Small Craft Advisory may
be needed.
.TUESDAY...Northeast winds to 30 knots. Partly cloudy. Waves 2 to
4 feet.
.WEDNESDAY...East winds to 30 knots. Mostly cloudy with a chance
of showers. Waves 2 to 4 feet.

$$

TF

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

Graphical marine forecasts are available at weather.gov/greatlakes