Great Lakes Forecast
Issued by NWS

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607
FZUS61 KBUF 150902
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
402 AM EST Sat Nov 15 2025

SLZ022-151600-
Saint Lawrence River from Cape Vincent to Ogdensburg-
402 AM EST Sat Nov 15 2025

.TODAY...East winds less than 10 knots. Rain showers late.
.TONIGHT...East winds 5 to 15 knots becoming west. Rain showers.
.SUNDAY...West winds 15 to 20 knots. Rain and snow showers in the
morning, then snow showers in the afternoon.
.SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest
10 to 15 knots. Snow showers likely.
.MONDAY...West winds 5 to 15 knots. A chance of snow showers
during the day.
.TUESDAY...West winds 5 to 10 knots becoming light and variable.
Mostly cloudy.
.WEDNESDAY...Northwest winds less than 10 knots. Mostly cloudy.

$$

SLZ024-151600-
Saint Lawrence River from Ogdensburg to Saint Regis-
402 AM EST Sat Nov 15 2025

.TODAY...Light and variable winds. Rain showers likely late.
.TONIGHT...East winds 10 knots or less becoming west. Rain
showers.
.SUNDAY...West winds 15 to 20 knots. Snow and rain showers in the
morning, then snow showers in the afternoon.
.SUNDAY NIGHT...West winds 15 to 20 knots. Snow showers likely.
.MONDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of snow showers during the day.
.TUESDAY...West winds 5 to 10 knots becoming light and variable.
Mostly cloudy.
.WEDNESDAY...West winds less than 10 knots. Mostly cloudy.

$$