Great Lakes Forecast
Issued by NWS

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080
FZUS61 KBUF 222002
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
402 PM EDT Fri Aug 22 2025

SLZ022-024-230300-
Saint Lawrence River from Cape Vincent to Saint Regis
402 PM EDT Fri Aug 22 2025

.TONIGHT...Southwest winds 10 knots or less becoming south.
Mainly clear through the early overnight, then becoming partly
cloudy.
.SATURDAY...South winds 5 to 10 knots becoming southwest. Mostly
sunny early, then becoming mostly cloudy.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots becoming south.
Showers with a chance of thunderstorms.
.SUNDAY...South winds 5 to 15 knots becoming southwest. Showers
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 10 knots or less. A chance of
showers and thunderstorms in the evening, then a chance of
showers overnight.
.MONDAY...Southwest winds 5 to 10 knots becoming west. A chance
of showers.
.TUESDAY...West winds 10 knots or less. A chance of showers.
.WEDNESDAY...West winds 5 to 10 knots becoming southwest. Partly
cloudy.

Winds and waves higher in and near thunderstorms.

$$