607
FZUS63 KDTX 301356
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
956 AM EDT Thu Jul 30 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, 30.30 inches, governs Great Lakes
conditions today and Friday. Low pressure then tracks into the
Ohio Valley this weekend, with local pressure averaging around
29.90 inches in its wake. This brings rain and isolated
thunderstorm chances to the Great Lakes Friday night and
Saturday.

LCZ460-302200-
Lake St Clair-
956 AM EDT Thu Jul 30 2026

.REST OF TODAY...North winds 5 to 10 knots veering to the northeast
late in the afternoon. Sunny. Waves 2 feet or less.
.TONIGHT...East winds 5 to 10 knots this evening becoming light and
variable. Mostly clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming southeast 5 to 10 knots
early in the afternoon. Mostly sunny until late afternoon becoming
mostly cloudy. Waves nearly calm.
.FRIDAY NIGHT...South winds 5 to 10 knots backing to the northeast
after midnight. Cloudy. A chance of light showers after midnight.
Waves 2 feet or less.
.SATURDAY...Northeast winds 5 to 10 knots. Mostly cloudy. A chance
of light showers in the morning...then a chance of thunderstorms in
the afternoon. Light showers likely in the afternoon and evening.
Waves 2 feet or less.
.SUNDAY...North winds 15 to 20 knots. Partly cloudy. Waves 2 feet or
less.
.MONDAY...East winds 10 to 15 knots. Clear. Waves 2 feet or less.

$$

JA

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

Graphical marine forecasts are available at weather.gov/greatlakes