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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt mon jun 1 2026


slz022-024-020900-
saint lawrence river from cape vincent to saint regis
1003 pm edt mon jun 1 2026

.overnight...light and variable winds. mainly clear, then
becoming partly cloudy. 
.tuesday...light and variable winds becoming north 5 to 10 knots.
mostly sunny. 
.tuesday night...northwest winds less than 10 knots. becoming
mainly clear. 
.wednesday...light and variable winds becoming west 5 to
10 knots. sunny.
.wednesday night...southwest winds 10 knots or less. mainly
clear. 
.thursday...southwest winds 10 knots or less. mainly clear, then
becoming mostly cloudy. 
.friday...southwest winds 10 knots or less. a chance of showers
friday night. 
.saturday...southwest winds 10 knots or less becoming northeast.
a chance of showers. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt mon jun 1 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 30.4 inch high will build into the great lakes tonight 
through tuesday, then gradually expand to the ohio valley and 
eastern seaboard wednesday through thursday. this high will 
eventually drift off the southeast coast friday. a weak cold front 
will then settle south across the lower great lakes saturday.


loz063>065-020900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt mon jun 1 2026

.overnight...north winds 10 knots or less becoming
northwest. waves 1 foot or less. 
.tuesday...west winds 10 knots or less. waves 1 foot or less. 
.tuesday night...west winds 5 to 10 knots. waves 1 foot or less. 
.wednesday...west winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...southwest winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.friday...southwest winds 5 to 15 knots. a chance of showers
friday night. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots becoming east. a chance
of showers. waves 2 feet or less. 

$$