Great Lakes Forecast
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696
FZUS61 KBUF 060302
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1002 PM EST Fri Dec 5 2025

SLZ022-061000-
Saint Lawrence River from Cape Vincent to Ogdensburg-
1002 PM EST Fri Dec 5 2025

.OVERNIGHT...South winds 5 to 15 knots. A chance of snow
showers late.
.SATURDAY...South winds 10 to 15 knots becoming southwest. A
chance of snow showers early, then lake effect snow showers
likely from late morning on.
.SATURDAY NIGHT...Southwest winds 10 knots or less becoming
north. A chance of snow showers in the evening.
.SUNDAY...Northeast winds less than 10 knots. Snow likely in the
afternoon.
.SUNDAY NIGHT...Northeast winds 10 knots or less becoming north.
Snow likely.
.MONDAY...North winds 10 knots or less becoming south. Partly
cloudy, then becoming mostly cloudy.
.TUESDAY...South winds 5 to 15 knots becoming southwest. Snow
showers likely.
.WEDNESDAY...South winds 5 to 15 knots becoming southwest. Snow
and rain showers.

$$

SLZ024-061000-
Saint Lawrence River from Ogdensburg to Saint Regis-
1002 PM EST Fri Dec 5 2025

.OVERNIGHT...South winds 5 to 10 knots. A chance of snow
showers late.
.SATURDAY...South winds 5 to 15 knots becoming southwest. A
chance of snow showers.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots becoming
northwest less than 10 knots. Partly to mostly cloudy.
.SUNDAY...Light and variable winds. A chance of snow showers in
the afternoon.
.SUNDAY NIGHT...Northeast winds 10 knots or less becoming
northwest. Snow likely.
.MONDAY...Northwest winds 10 knots or less becoming south. Partly
cloudy.
.TUESDAY...South winds 5 to 10 knots becoming southwest. Snow
showers likely.
.WEDNESDAY...South winds 5 to 10 knots becoming southwest. Snow
and rain showers during the day, then snow showers Wednesday
night.

$$