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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1010 pm edt sat mar 28 2026


slz022-024-290900-
saint lawrence river from cape vincent to saint regis
1010 pm edt sat mar 28 2026

.overnight...southwest winds 10 knots or less. a chance of
snow showers. 
.sunday...southwest winds 5 to 15 knots. a chance of snow showers
early. 
.sunday night...southwest winds 5 to 15 knots. mostly cloudy. 
.monday...southwest winds 5 to 15 knots. partly sunny. 
.monday night...southwest winds 10 knots or less becoming east. a
chance of rain showers overnight. 
.tuesday...east winds 10 to 15 knots becoming southwest. rain
showers. 
.wednesday...west winds 5 to 15 knots becoming north. rain
showers likely during the day. 
.thursday...northeast winds 5 to 10 knots becoming east. a chance
of snow and rain showers thursday night. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt sat mar 28 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 strong 30.7 inch high over the ohio valley will move 
off the mid atlantic coast by sunday. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday. another 30.7 inch high across quebec is 
then forecast to extend down across the lake thursday.


loz062-290900-
lake ontario open waters from the niagara river to hamlin beach-
1009 pm edt sat mar 28 2026

.overnight...west winds 15 to 20 knots becoming southwest
10 to 15 knots. waves 2 to 4 feet. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday night...southwest winds 10 to 15 knots becoming south. a
chance of showers in the evening, then showers likely overnight.
waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west to
30 knots. showers with a chance of thunderstorms. waves 3 to
5 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.wednesday...west winds 15 to 25 knots becoming northeast. rain
showers likely during the day. waves 4 to 7 feet subsiding to
3 to 6 feet. waves occasionally around 9 feet. 
.thursday...northeast winds to 30 knots becoming east. a chance
of snow and rain showers. waves 5 to 8 feet building to 6 to
9 feet. waves occasionally around 11 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt sat mar 28 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 strong 30.7 inch high over the ohio valley will move 
off the mid atlantic coast by sunday. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday. another 30.7 inch high across quebec is 
then forecast to extend down across the lake thursday.


loz063>065-290900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 pm edt sat mar 28 2026

.overnight...west winds 15 to 20 knots becoming southwest
10 to 15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.sunday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday night...southwest winds 5 to 10 knots becoming south. a
chance of rain showers in the evening, then rain showers likely
overnight. waves 1 to 2 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. showers with a chance of
thunderstorms. waves 1 to 3 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.wednesday...west winds 15 to 25 knots becoming northeast. rain
showers likely during the day. waves 5 to 8 feet subsiding to
3 to 6 feet. waves occasionally around 10 feet. 
.thursday...northeast winds 15 to 25 knots becoming east. a
chance of rain and snow showers. waves 3 to 6 feet building to
5 to 8 feet. waves occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$