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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1005 am edt wed jun 3 2026


slz022-024-032100-
saint lawrence river from cape vincent to saint regis
1005 am edt wed jun 3 2026

.this afternoon...west winds 10 knots or less. sunny.
.tonight...southwest winds 10 knots or less. mainly clear in the
evening, then becoming partly cloudy. 
.thursday...southwest winds 10 knots or less. mostly sunny. 
.thursday night...southwest winds 10 knots or less. partly cloudy
in the evening, then becoming mostly cloudy. 
.friday...southwest winds 5 to 10 knots. showers likely friday
night. 
.saturday...southwest winds 10 knots or less becoming south.
showers with a chance of thunderstorms. 
.sunday...northeast winds 10 knots or less. 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
1004 am edt wed jun 3 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 expand to the ohio valley and 
eastern seaboard this afternoon 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. high pressure averaging 30.4 inches will push southeast into 
the region starting early monday and center near or just east of the 
lake through wednesday.


loz063>065-032100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1004 am edt wed jun 3 2026

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

winds and waves higher in and near thunderstorms.

$$