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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
404 pm edt tue jun 2 2026


slz022-024-030300-
saint lawrence river from cape vincent to saint regis
404 pm edt tue jun 2 2026

.tonight...northwest winds less than 10 knots. partly cloudy this
evening, then becoming mainly clear. 
.wednesday...light and variable winds becoming west 5 to
10 knots. sunny.
.wednesday night...southwest winds 10 knots or less. partly
cloudy. 
.thursday...southwest winds 5 to 10 knots. partly to mostly
sunny. 
.thursday night...southwest winds 10 knots or less. mostly
cloudy. 
.friday...southwest winds 5 to 10 knots. a chance of showers
friday night. 
.saturday...southwest winds 10 knots or less becoming east.
showers likely. 
.sunday...east winds 10 knots or less. a chance of showers. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt tue jun 2 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 across the great lakes 
today and tonight, 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 into 
sunday.


loz062-030300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt tue jun 2 2026

.tonight...west winds 5 to 15 knots. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.wednesday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.thursday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.friday...southwest winds 10 to 15 knots. a chance of showers and
thunderstorms friday night. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots. showers likely with a
chance of thunderstorms during the day, then showers likely
saturday night. waves 1 to 3 feet. 
.sunday...south winds 5 to 10 knots becoming east. a chance of
showers. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

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glflo 
expires:202606030300;;077127

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt tue jun 2 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 across the great lakes 
today and tonight, 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 into 
sunday.


loz063>065-030300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt tue jun 2 2026

.tonight...west winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...west winds 5 to 10 knots. waves 1 to 2 feet. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.thursday night...southwest winds 5 to 15 knots. waves 2 feet or
less. 
.friday...southwest winds 5 to 15 knots. a chance of showers
friday night. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots becoming south. a
chance of showers during the day, then showers likely saturday
night. waves 2 feet or less. 
.sunday...east winds 5 to 10 knots. a chance of showers. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$