FZUS63 KDTX 181937
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
337 PM EDT Thu Sep 18 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
A weak cold front drops through the region bringing a chance for scattered rain and storms this afternoon into the evening, focusing mainly across the Saginaw Bay region. Another strong high pressure system then begins to build in from northern Ontario, reaching southern Quebec on Saturday and New England by Sunday.

LCZ460-190345
Lake St Clair
337 PM EDT Thu Sep 18 2025

TONIGHT
Northeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less.

FRIDAY
Northeast winds 5 to 10 knots increasing to 10 to 15 knots late in the afternoon. Mostly sunny. Waves 2 feet or less.

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

SATURDAY
East winds 10 to 15 knots. Partly sunny. Waves 2 feet or less.

SATURDAY NIGHT
East winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and early morning...then diminishing to 10 to 15 knots after midnight. Partly cloudy. Waves 2 feet or less.

SUNDAY
Southeast winds 5 to 10 knots becoming south 10 to 15 knots in the afternoon and evening. Partly sunny in the morning...then partly cloudy with a chance of light showers in the afternoon and evening. Waves 2 feet or less.

MONDAY
Southwest winds 10 to 15 knots. Mostly cloudy. Showers likely. Waves 2 feet or less.

TUESDAY
Northeast winds 5 to 10 knots. Partly cloudy. A chance of showers. Waves 2 feet or less.

SS

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

Graphical marine forecasts are available at weather.gov/greatlakes