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


slz022-024-281500-
saint lawrence river from cape vincent to saint regis
404 am edt sat mar 28 2026

.today...southwest winds 10 knots or less becoming west 10 to
15 knots. partly to mostly sunny. 
.tonight...west winds 5 to 15 knots becoming southwest. a chance
of snow showers after midnight. 
.sunday...southwest winds 5 to 15 knots. a chance of snow showers
in the morning. 
.sunday night...southwest winds 5 to 10 knots. mostly cloudy. 
.monday...southwest winds 5 to 10 knots becoming east. a chance
of rain showers monday night. 
.tuesday...east winds 10 to 15 knots becoming southwest. rain
showers. 
.wednesday...west winds 5 to 10 knots becoming north. rain
showers during the day. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 am 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 30.6 inch high will build to the ohio valley by 
this afternoon, then off the mid atlantic coast 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.


loz063-064-281500-
lake ontario open waters from hamlin beach to mexico bay-
403 am edt sat mar 28 2026

.today...northwest winds 10 to 15 knots becoming west and
increasing to 15 to 25 knots. a chance of snow showers this
morning. waves 1 to 3 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.tonight...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.sunday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday night...southwest winds 10 to 15 knots. waves 1 to
2 feet. 
.monday...southwest winds 5 to 15 knots becoming southeast. rain
showers likely monday night. waves 1 to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. showers
during the day, then showers with a chance of thunderstorms
tuesday night. waves 1 to 3 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.wednesday...west winds 15 to 25 knots becoming north. rain
showers during the day, then a chance of rain showers wednesday
night. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 am 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 30.6 inch high will build to the ohio valley by 
this afternoon, then off the mid atlantic coast 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.


loz065-281500-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 am edt sat mar 28 2026

.today...northwest winds 5 to 10 knots becoming west and
increasing to 15 to 20 knots. a chance of snow showers late this
morning. waves 2 feet or less building to 3 to 6 feet. 
.tonight...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.sunday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday night...south winds 10 to 15 knots. waves 1 to 2 feet. 
.monday...southwest winds 5 to 15 knots becoming southeast. rain
showers likely monday night. waves 1 to 2 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. showers during the day, then
showers with a chance of thunderstorms tuesday night. waves 1 to
3 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.wednesday...west winds 15 to 25 knots becoming north. rain
showers during the day, then a chance of rain showers wednesday
night. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$