Great Lakes Forecast
Issued by NWS

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299
FZUS61 KBUF 240203
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1003 PM EDT Sun Aug 23 2026

SLZ022-024-240900-
Saint Lawrence River from Cape Vincent to Saint Regis
1003 PM EDT Sun Aug 23 2026

.REST OF TONIGHT...Southwest winds 5 to 10 knots. Showers likely
late this evening, then showers after midnight.
.MONDAY...South winds 5 to 15 knots becoming southwest. Showers
in the morning, then showers with a chance of thunderstorms in
the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Showers with a
chance of thunderstorms in the evening, then a chance of showers
overnight.
.TUESDAY...West winds 5 to 10 knots. A chance of showers in the
morning, then showers likely in the afternoon.
.TUESDAY NIGHT...West winds less than 10 knots. Showers likely in
the evening.
.WEDNESDAY...Southwest winds 10 knots or less becoming southeast.
Partly cloudy.
.THURSDAY...South winds 5 to 10 knots becoming southwest. A
chance of showers during the day, then showers likely Thursday
night.
.FRIDAY...Southwest winds 10 knots or less becoming northwest. A
chance of showers.

Winds and waves higher in and near thunderstorms.

$$