635
FZUS63 KDTX 220158
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
958 PM EDT Tue Jul 21 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 fills into the Great Lakes region today,
providing dry and subsiding northwest flow for the rest of the
week.

LCZ460-221000-
Lake St Clair-
958 PM EDT Tue Jul 21 2026

.REST OF TONIGHT...Northwest winds around 20 knots. Partly cloudy.
Waves 1 to 3 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15
knots in the afternoon. Mostly sunny. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 knots becoming north 5
to 10 knots in the late evening and overnight. Mostly clear. Waves 2
feet or less.
.THURSDAY...North winds 5 to 10 knots early in the morning becoming
light and variable...then becoming east 5 to 10 knots early in the
afternoon. Sunny. Waves 2 feet or less.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots becoming light and
variable. Clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming southeast 5 to 10 knots
in the afternoon and evening. Mostly sunny becoming sunny in the
afternoon becoming mostly clear. Waves 2 feet or less.
.SATURDAY...South winds 10 to 15 knots. Mostly clear. Waves 2 feet
or less.
.SUNDAY...South winds 10 to 15 knots. Mostly clear. A chance of
showers and thunderstorms. Waves 2 feet or less.

$$

BT

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

Graphical marine forecasts are available at weather.gov/greatlakes