Great Lakes Forecast
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173
FZUS61 KBUF 181502
GLFSL

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
1002 AM EST Tue Nov 18 2025

SLZ022-182200-
Saint Lawrence River from Cape Vincent to Ogdensburg-
1002 AM EST Tue Nov 18 2025

.THIS AFTERNOON...West winds 5 to 10 knots. Mostly sunny.
.TONIGHT...West winds 10 knots or less becoming north. Mainly
clear through the early overnight, then becoming partly cloudy.
.WEDNESDAY...Light and variable winds. Sunny.
.WEDNESDAY NIGHT...Light and variable winds. Partly cloudy in the
evening, then becoming mostly cloudy.
.THURSDAY...Light and variable winds becoming south 5 to
10 knots. Rain showers likely Thursday night.
.FRIDAY...Southwest winds 10 knots or less becoming west. Rain
showers during the day, then a chance of rain showers Friday
night.
.SATURDAY...West winds less than 10 knots becoming southwest.
Mostly cloudy.

$$

SLZ024-182200-
Saint Lawrence River from Ogdensburg to Saint Regis-
1002 AM EST Tue Nov 18 2025

.THIS AFTERNOON...West winds 5 to 10 knots. Mostly cloudy, then
becoming partly sunny.
.TONIGHT...West winds less than 10 knots becoming northwest.
Partly cloudy.
.WEDNESDAY...Northwest winds less than 10 knots becoming west.
Mostly sunny.
.WEDNESDAY NIGHT...Light and variable winds. Partly cloudy in the
evening, then becoming mostly cloudy.
.THURSDAY...Light and variable winds becoming south 5 to
10 knots. Rain showers likely Thursday night.
.FRIDAY...South winds 10 knots or less becoming west. Rain
showers during the day, then a chance of rain showers Friday
night.
.SATURDAY...West winds less than 10 knots. Mostly cloudy.

$$