National Weather Service Marine Forecast FZUS63 KDTX

FZUS63 KDTX 200755
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
355 AM EDT Sat Jun 20 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 ridge of high pressure, 29.90 inches, builds in through the morning which will support lighter winds. The next low pressure system, 29.60 inches, will arrive late tomorrow into Monday morning, bringing renewed rain and thunderstorm chances along with elevated winds speeds across the southern Great Lakes.

LCZ460-201600
Lake St Clair
355 AM EDT Sat Jun 20 2026

TODAY
West winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Partly sunny. A chance of light showers. A chance of thunderstorms late in the afternoon. Waves 2 feet or less.

TONIGHT
Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. A chance of showers and thunderstorms early in the evening then clearing. Waves 2 feet or less.

SUNDAY
Light and variable winds becoming southeast 5 to 10 knots early in the afternoon. Partly sunny. Waves 2 feet or less.

SUNDAY NIGHT
Southeast winds 5 to 10 knots increasing to 10 to 15 knots by midnight...then becoming east 15 to 20 knots after midnight. Cloudy with showers likely. Waves 2 feet or less.

MONDAY
Northeast winds 15 to 20 knots becoming north 10 to 15 knots in the evening. Mostly cloudy with light showers likely in the morning...then partly cloudy in the afternoon and evening. Waves 1 to 3 feet.

TUESDAY
Northeast winds 10 to 15 knots. Mostly clear. Waves 2 feet or less.

WEDNESDAY
East winds 5 to 10 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