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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt thu may 14 2026


slz022-024-142100-
saint lawrence river from cape vincent to saint regis
1003 am edt thu may 14 2026

.this afternoon...southwest winds less than 10 knots becoming
north. mostly cloudy. 
.tonight...light and variable winds becoming north 5 to 10 knots.
a chance of showers in the evening, then showers likely after
midnight. 
.friday...north winds 10 knots or less becoming northwest. a
chance of showers in the morning. 
.friday night...southwest winds 10 knots or less. partly cloudy. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
saturday night. 
.sunday...west winds 10 knots or less becoming northeast. a
chance of showers during the day. 
.monday...east winds 10 knots or less becoming south. partly
cloudy. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu may 14 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 29.6 inch low north of lake ontario will drift over 
eastern new york and new england today. a 30.0 inch high will then 
build from the central great lakes and ohio valley tonight to the 
lower great lakes and mid atlantic friday, then off the carolina 
coast saturday. a 29.3 inch low over the central plains will then 
push a warm front into the lower great lakes sunday and sunday 
night. a second, stronger area of low pressure will develop over the 
central plains late monday. the low will deepen to 29.4 inches as it 
tracks northeast to the upper great lakes monday night into tuesday 
morning. as the system continues to track northeast toward james bay 
on tuesday, its associated cold front will approach the lake late 
tuesday.


loz062-142100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt thu may 14 2026

.this afternoon...northwest winds 5 to 10 knots. a chance of
showers with patchy drizzle. waves 1 to 2 feet. 
.tonight...northwest winds 5 to 10 knots. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.friday night...southwest winds 5 to 15 knots. waves 1 to 2 feet.
.saturday...southwest winds 10 to 15 knots. showers likely
saturday night. waves 1 to 3 feet. 
.sunday...west winds 10 knots or less becoming east. a chance of
showers during the day. waves 1 foot or less. 
.monday...east winds 5 to 15 knots becoming south. waves 1 to
2 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu may 14 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 29.6 inch low north of lake ontario will drift over 
eastern new york and new england today. a 30.0 inch high will then 
build from the central great lakes and ohio valley tonight to the 
lower great lakes and mid atlantic friday, then off the carolina 
coast saturday. a 29.3 inch low over the central plains will then 
push a warm front into the lower great lakes sunday and sunday 
night. a second, stronger area of low pressure will develop over the 
central plains late monday. the low will deepen to 29.4 inches as it 
tracks northeast to the upper great lakes monday night into tuesday 
morning. as the system continues to track northeast toward james bay 
on tuesday, its associated cold front will approach the lake late 
tuesday.


loz063>065-142100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt thu may 14 2026

.this afternoon...southwest winds 10 knots or less becoming
northwest. patchy drizzle. waves 2 feet or less. 
.tonight...northwest winds 10 knots or less. a chance of showers
late in the evening. showers likely after midnight, then a chance
of showers late. waves 2 feet or less. 
.friday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.friday night...southwest winds 5 to 10 knots becoming south.
waves 2 feet or less. 
.saturday...south winds 5 to 15 knots becoming southwest. showers
likely saturday night. waves 2 feet or less. 
.sunday...west winds 5 to 15 knots becoming east. showers likely
during the day. waves 2 feet or less. 
.monday...east winds 5 to 15 knots becoming south. waves 2 feet
or less. 

$$