National Weather Service Marine Forecast FZUS61 KBUF

FZUS61 KBUF 310203
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1003 PM EDT Thu Jul 30 2026

SLZ022-024-310900
Saint Lawrence River from Cape Vincent to Saint Regis 1003 PM EDT Thu Jul 30 2026

OVERNIGHT
West winds less than 10 knots. Patchy fog.

FRIDAY
Light and variable winds becoming west 5 to 10 knots. Patchy fog early.

FRIDAY NIGHT
Southwest winds less than 10 knots becoming south. Partly to mostly cloudy.

SATURDAY
South winds less than 10 knots becoming southwest. A chance of showers.

SATURDAY NIGHT
Light and variable winds. A chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms overnight.

SUNDAY
Southeast winds 10 knots or less becoming northwest. Showers with a chance of thunderstorms.

MONDAY
Northwest winds 5 to 10 knots becoming light and variable. A chance of showers.

TUESDAY
South winds less than 10 knots. Mainly clear, then becoming partly cloudy.

Winds and waves higher in and near thunderstorms.