FZUS63 KDTX 181359
GLFSC 

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
959 AM EDT Mon May 18 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 warm front lifts across Lake Huron this morning,
with southerly flow expanding across all of the local waters.
Strong to severe thunderstorms are possible this afternoon-
evening and again Tuesday as a cold front sweeps across the
region. High pressure, 30.50 inches, then builds in mid-week.

LCZ460-182200-
Lake St Clair-
959 AM EDT Mon May 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...South winds 15 to 20 knots increasing to 20 to 25
knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet
building to 2 to 4 feet late in the afternoon.
.TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15
knots after midnight. Mostly cloudy with a chance of showers and
thunderstorms in the evening...then partly cloudy with a chance of
light showers after midnight. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots becoming southwest 20 to 25
knots with gusts to 30 knots in the late morning and afternoon.
Partly sunny. A chance of light showers in the late morning and
early afternoon. Light showers likely and a chance of thunderstorms
early in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in
the late morning and afternoon.
.TUESDAY NIGHT...West winds 15 to 20 knots veering to the northwest
after midnight. Partly cloudy early in the evening becoming mostly
cloudy. Light showers likely and a chance of thunderstorms ...then a
chance of light showers after midnight. Waves 1 to 3 feet.
.WEDNESDAY...North winds 15 to 20 knots diminishing to 10 to 15
knots in the afternoon...then becoming northeast 15 to 20 knots in
the evening. Partly cloudy. Waves 2 feet or less.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly clear. Waves 2
feet or less.
.FRIDAY...East winds 15 to 20 knots. Partly cloudy. A chance of
showers. Waves 1 to 3 feet.

$$

DRK

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

Graphical marine forecasts are available at weather.gov/greatlakes