271
FZUS63 KDTX 180810
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
310 AM EST Tue Nov 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...Low pressure, 29.90 inches, will track across the Ohio
Valley today while high pressure of 30.20 inches holds across the
northern Great Lakes. This high will sustain dry conditions and
light winds across Lake Huron. The high will expand south across
Lower Michigan on Wednesday and drift east of the region by
Thursday. Deepening low pressure over northern Ontario Thursday
will drive a weak cold front across the region Thursday night.

LCZ460-181615-
Lake St Clair-
310 AM EST Tue Nov 18 2025

.TODAY...Light and variable winds. Mostly cloudy. A chance of light
snow in the morning...then a chance of light rain and snow in the
afternoon. Waves nearly calm.
.TONIGHT...Northeast winds 5 to 10 knots. Mostly cloudy with a
chance of light rain until early morning...then mostly clear early
in the morning. Waves 2 feet or less.
.WEDNESDAY...Northeast winds 5 to 10 knots until late afternoon
becoming light and variable. Partly sunny. Waves 2 feet or less.
.WEDNESDAY NIGHT...Light and variable winds. Mostly cloudy early in
the evening becoming partly cloudy. Waves 2 feet or less.
.THURSDAY...Light and variable winds becoming south 5 to 10 knots in
the afternoon and evening. Mostly cloudy. A chance of light rain in
the evening. Waves 2 feet or less.
.FRIDAY...Northwest winds 10 to 15 knots. Partly cloudy. A chance of
light rain. Waves 2 feet or less.
.SATURDAY...Southwest winds 5 to 10 knots. Mostly clear. Waves 2
feet or less.

$$

SC

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

Graphical marine forecasts are available at weather.gov/greatlakes