Great Lakes Forecast
Issued by NWS

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980
FZUS61 KBUF 300302
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1002 PM EST Sat Nov 29 2025

SLZ022-301000-
Saint Lawrence River from Cape Vincent to Ogdensburg-
1002 PM EST Sat Nov 29 2025

.OVERNIGHT...Southeast winds 10 knots or less increasing to
10 to 15 knots. A chance of snow. Snow late.
.SUNDAY...Southeast winds 15 to 20 knots becoming south. Snow in
the morning, then snow and rain in the afternoon.
.SUNDAY NIGHT...Southwest winds 15 to 25 knots becoming
northwest. Rain and snow showers.
.MONDAY...Northwest winds 5 to 15 knots becoming southwest less
than 10 knots. A chance of snow showers in the morning.
.MONDAY NIGHT...Light and variable winds becoming south 5 to
10 knots. A chance of snow showers overnight.
.TUESDAY...South winds 10 knots or less becoming northwest. Snow
showers likely during the day.
.WEDNESDAY...Southwest winds 5 to 15 knots becoming west. A
chance of snow showers during the day, then snow showers
Wednesday night.
.THURSDAY...West winds 5 to 15 knots becoming south. Snow showers
during the day, then a chance of snow showers Thursday night.

$$

SLZ024-301000-
Saint Lawrence River from Ogdensburg to Saint Regis-
1002 PM EST Sat Nov 29 2025

.OVERNIGHT...East winds 10 knots or less becoming
southeast. Snow likely late.
.SUNDAY...Southeast winds 5 to 15 knots becoming south 15 to
20 knots. Snow through early afternoon, then rain and snow likely
late.
.SUNDAY NIGHT...Southwest winds 15 to 25 knots becoming
northwest. Rain and snow showers in the evening, then snow
showers overnight.
.MONDAY...Northwest winds 15 to 20 knots becoming west and
diminishing to less than 10 knots in the afternoon. A chance of
snow showers in the morning.
.MONDAY NIGHT...Light and variable winds. A chance of snow
showers overnight.
.TUESDAY...South winds 5 to 10 knots becoming light and variable.
Snow showers likely during the day.
.WEDNESDAY...Southwest winds 5 to 15 knots becoming west. Snow
showers Wednesday night.
.THURSDAY...West winds 5 to 15 knots becoming southwest. Snow
showers during the day.

$$