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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm edt fri jun 5 2026


slz022-024-060900-
saint lawrence river from cape vincent to saint regis
1002 pm edt fri jun 5 2026

.overnight...south winds less than 10 knots becoming
southwest. a chance of showers late. 
.saturday...south winds 5 to 15 knots becoming southwest. showers
in the morning, then showers likely with a chance of
thunderstorms in the afternoon. 
.saturday night...southwest winds 10 knots or less becoming west.
showers with a chance of thunderstorms in the evening, then
showers likely overnight. 
.sunday...northwest winds 5 to 10 knots becoming north. a chance
of showers. 
.sunday night...northeast winds less than 10 knots. a chance of
showers in the evening. 
.monday...northeast winds less than 10 knots. mainly clear. 
.tuesday...light and variable winds. mainly clear. 
.wednesday...south winds less than 10 knots. a chance of showers.

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 5 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 30.1 inch high will very slowly drift away from the 
southeast coast tonight. a weak cold front will then move south 
across the lower great lakes saturday and saturday night. another 
30.2 inch high over quebec sunday will build southeast into new 
england monday, then remain near or just off the east coast through 
wednesday.


loz062-060900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri jun 5 2026

.overnight...southwest winds 5 to 15 knots. a chance of
showers, then showers late. waves 1 to 2 feet. 
.saturday...southwest winds 15 to 20 knots becoming west. showers
likely early, then a chance of showers late in the morning. a
chance of showers and thunderstorms in the afternoon. waves 2 to
4 feet. 
.saturday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.sunday night...west winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...east winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...east winds 10 knots or less becoming southeast. a
chance of showers tuesday night. waves 1 foot or less. 
.wednesday...southeast winds 10 knots or less becoming southwest.
a chance of showers. waves 1 foot or less. 

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 5 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 30.1 inch high will very slowly drift away from the 
southeast coast tonight. a weak cold front will then move south 
across the lower great lakes saturday and saturday night. another 
30.2 inch high over quebec sunday will build southeast into new 
england monday, then remain near or just off the east coast through 
wednesday.


loz063>065-060900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri jun 5 2026

.overnight...south winds 5 to 10 knots. a chance of showers
after midnight. showers likely late. waves 1 foot or less. 
.saturday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. showers early, then a chance of showers. a chance of
showers and thunderstorms late. waves 1 to 2 feet building to
3 to 5 feet. 
.saturday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms in the evening,
then a chance of showers overnight. waves 3 to 5 feet subsiding
to 1 to 3 feet. 
.sunday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.sunday night...northwest winds 10 knots or less becoming east.
waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...southeast winds 10 knots or less becoming south. a
chance of showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$