Great Lakes Forecast
Issued by NWS

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279
FZUS61 KBUF 260203
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1003 PM EDT Sat Jul 25 2026

SLZ022-024-260900-
Saint Lawrence River from Cape Vincent to Saint Regis
1003 PM EDT Sat Jul 25 2026

.OVERNIGHT...Light and variable winds. Mostly cloudy.
.SUNDAY...South winds 10 knots or less becoming southwest. A
chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds less than 10 knots. A chance of
showers overnight.
.MONDAY...South winds less than 10 knots becoming southwest. A
chance of showers in the morning, then showers likely with a
chance of thunderstorms in the afternoon.
.MONDAY NIGHT...Light and variable winds. Showers likely with a
chance of thunderstorms in the evening, then a chance of showers
overnight.
.TUESDAY...Southeast winds 10 knots or less becoming northeast.
Showers with a chance of thunderstorms.
.WEDNESDAY...Northeast winds 5 to 10 knots becoming north.
Showers likely with a chance of thunderstorms.
.THURSDAY...North winds 5 to 10 knots becoming light and
variable. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$