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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt fri jun 26 2026


slz022-024-270900-
saint lawrence river from cape vincent to saint regis
1003 pm edt fri jun 26 2026

.overnight...southwest winds less than 10 knots. patchy fog
after midnight. 
.saturday...light and variable winds. patchy fog early. 
.saturday night...light and variable winds. mainly clear. 
.sunday...light and variable winds. mostly sunny. 
.sunday night...light and variable winds. mainly clear in the
evening, then becoming partly cloudy. 
.monday...light and variable winds. partly cloudy. 
.tuesday...south winds less than 10 knots. a chance of showers
and thunderstorms. 
.wednesday...southwest winds 10 knots or less. 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
1002 pm 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 will move east across the canadian 
maritimes through saturday. meanwhile, a 30.1 inch high will build 
into the upper great lakes saturday through early sunday before 
drifting east to quebec and new england by monday, then east of the 
new england coast by tuesday. another broad 30.1 inch high will 
build into the ohio valley and mid atlantic by wednesday.


loz063>065-270900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri jun 26 2026

.overnight...west winds 5 to 10 knots becoming southwest.
patchy fog late. waves 1 foot or less. 
.saturday...southwest winds 10 knots or less becoming north.
patchy fog early. waves 1 foot or less. 
.saturday night...north winds less than 10 knots. waves 1 foot or
less. 
.sunday...light and variable winds becoming northwest 5 to
10 knots. waves 1 foot or less. 
.sunday night...northwest winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.monday...light and variable winds becoming southeast 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. 
.wednesday...southwest winds 5 to 15 knots becoming west. a
chance of showers. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$