387
FZUS61 KBUF 220203
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1003 PM EDT Tue Jul 21 2026

SLZ022-024-220900-
Saint Lawrence River from Cape Vincent to Saint Regis
1003 PM EDT Tue Jul 21 2026

.REST OF TONIGHT...South winds 5 to 15 knots becoming southwest.
Showers with a chance of thunderstorms, then a chance of showers
late. Some thunderstorms may produce gusty winds late this
evening.
.WEDNESDAY...West winds 10 to 15 knots. A chance of showers.
.WEDNESDAY NIGHT...West winds 5 to 15 knots becoming southwest
less than 10 knots. A chance of showers in the evening.
.THURSDAY...Southwest winds 10 knots or less becoming west.
Sunny.
.THURSDAY NIGHT...Southwest winds 10 knots or less. Mainly clear.
.FRIDAY...Southwest winds less than 10 knots. Mainly clear.
.SATURDAY...South winds 10 knots or less. Mainly clear, then
becoming partly cloudy.
.SUNDAY...South winds 10 knots or less becoming southwest. A
chance of showers during the day, then showers likely Sunday
night.

Winds and waves higher in and near thunderstorms.

$$