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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt fri jun 26 2026


slz022-024-261500-
saint lawrence river from cape vincent to saint regis
402 am edt fri jun 26 2026

.today...south winds 10 knots or less becoming west. patchy fog
early. showers likely early, then a chance of showers and
thunderstorms from late morning on. 
.tonight...west winds less than 10 knots. a chance of showers and
thunderstorms early. areas of fog after midnight. 
.saturday...light and variable winds. areas of fog in the
morning. 
.saturday night...light and variable winds. becoming mainly
clear. 
.sunday...light and variable winds. mainly clear, then becoming
partly cloudy. 
.monday...light and variable winds. a chance of showers monday
night. 
.tuesday...south winds less than 10 knots. a chance of showers
and thunderstorms. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri jun 26 2026

for waters beyond five nautical miles of shore on lake ontario

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...a weak 29.9 inch low over the ontario peninsula this 
morning will move to southern quebec throughout the day today before 
passing across the canadian maritimes saturday. a 30.1 inch high 
will then build across the upper great lakes saturday, the lower 
great lakes sunday, and then southern quebec to new england by 
tuesday.


loz063>065-261500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri jun 26 2026

.today...southwest winds 5 to 10 knots becoming west. a chance of
showers early. patchy fog this morning. waves 2 feet or less. 
.tonight...west winds 5 to 10 knots becoming light and variable.
waves 1 foot or less. 
.saturday...light and variable winds. waves 1 foot or less. 
.saturday night...north winds less than 10 knots becoming
northwest. waves 1 foot or less. 
.sunday...northwest winds less than 10 knots. waves 1 foot or
less. 
.monday...light and variable winds becoming south 5 to 10 knots.
waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$