National Weather Service Marine Forecast FZUS61 KBUF

FZUS61 KBUF 162003
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
403 PM EDT Wed Sep 16 2026

SLZ022-024-170300
Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Wed Sep 16 2026

TONIGHT
North winds less than 10 knots becoming northeast. Mostly cloudy.

THURSDAY
Northeast winds 10 knots or less becoming north. Mostly cloudy early, then becoming mostly sunny.

THURSDAY NIGHT
North winds less than 10 knots. Partly cloudy.

FRIDAY
Northwest winds 5 to 10 knots becoming north. Sunny.

FRIDAY NIGHT
North winds 10 knots or less becoming northeast. Partly cloudy.

SATURDAY
Northeast winds less than 10 knots. Showers likely Saturday night.

SUNDAY
Northeast winds 5 to 10 knots becoming north. Showers likely during the day.

MONDAY
Northeast winds 5 to 10 knots. Mostly cloudy.