139
FZUS61 KBUF 180201
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1001 PM EDT Mon Aug 17 2026

SLZ022-024-180900-
Saint Lawrence River from Cape Vincent to Saint Regis
1001 PM EDT Mon Aug 17 2026

.OVERNIGHT...North winds less than 10 knots. Patchy fog
late.
.TUESDAY...North winds 10 knots or less becoming west. Patchy fog
early.
.TUESDAY NIGHT...Southwest winds 10 knots or less becoming south.
A chance of showers overnight.
.WEDNESDAY...South winds 5 to 10 knots becoming southwest.
Showers in the morning, then showers with a chance of
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots becoming light
and variable. Showers with a chance of thunderstorms in the
evening.
.THURSDAY...Light and variable winds. Becoming mainly clear.
.FRIDAY...Light and variable winds. Mainly clear.
.SATURDAY...Southeast winds less than 10 knots. A chance of
showers during the day, then showers likely Saturday night.

Winds and waves higher in and near thunderstorms.

$$