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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt wed sep 2 2026


slz022-024-022100-
saint lawrence river from cape vincent to saint regis
1003 am edt wed sep 2 2026

.rest of today...south winds 5 to 10 knots. a chance of showers
late this morning, then a chance of showers and thunderstorms
early this afternoon. showers likely with a chance of
thunderstorms late. 
.tonight...south winds 5 to 10 knots becoming southwest. showers
with a chance of thunderstorms through the early overnight, then
a chance of showers late. 
.thursday...southwest winds 10 knots or less becoming west. a
chance of showers in the afternoon. 
.thursday night...west winds less than 10 knots. a chance of
showers in the evening. 
.friday...northwest winds 10 knots or less. partly cloudy. 
.saturday...north winds 10 knots or less becoming northeast.
becoming mainly clear. 
.sunday...northeast winds less than 10 knots. mainly clear. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt wed sep 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 warm front continues to drift northward across lake 
ontario through this early afternoon before a cold front sweeps 
eastward across the lake tonight. behind the front, an extensive 
high pressure ridge averaging 30.1 inches builds from northern 
ontario and vicinity through this monday.


loz062-022100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt wed sep 2 2026

.rest of today...south winds 5 to 10 knots. a chance of showers
and thunderstorms late this morning. a chance of showers and
thunderstorms late. waves 1 foot or less. 
.tonight...southwest winds 5 to 10 knots becoming west. showers
with thunderstorms likely early, then showers with a chance of
thunderstorms. a chance of showers late. waves 1 foot or less. 
.thursday...west winds 5 to 10 knots. waves 1 foot or less. 
.thursday night...west winds 5 to 10 knots becoming northwest.
waves 1 foot or less. 
.friday...northwest winds 10 knots or less becoming north. waves
1 foot or less. 
.saturday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.sunday...northeast winds 10 knots or less becoming southeast.
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 am edt wed sep 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 warm front continues to drift northward across lake 
ontario through this early afternoon before a cold front sweeps 
eastward across the lake tonight. behind the front, an extensive 
high pressure ridge averaging 30.1 inches builds from northern 
ontario and vicinity through this monday.


loz063>065-022100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt wed sep 2 2026

.rest of today...southeast winds 5 to 15 knots becoming south.
showers with a chance of thunderstorms, then a chance of showers
and thunderstorms late. waves 2 feet or less. 
.tonight...south winds 10 to 15 knots becoming west. showers with
thunderstorms likely in the evening, then showers with a chance
of thunderstorms after midnight. a chance of showers late. waves
2 feet or less. 
.thursday...west winds 5 to 10 knots. a chance of showers in the
morning. waves 1 to 2 feet. 
.thursday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.friday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.saturday...north winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.sunday...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$