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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1004 am edt mon may 25 2026


slz022-252100-
saint lawrence river from cape vincent to ogdensburg-
1004 am edt mon may 25 2026

.rest of today...west winds 10 knots or less. a chance of showers
late this morning. 
.tonight...southwest winds 10 knots or less. partly cloudy. 
.tuesday...southwest winds 5 to 15 knots. sunny.
.tuesday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots. mainly clear in the evening, then becoming
partly cloudy. 
.wednesday...west winds 10 knots or less becoming north. partly
cloudy. 
.thursday...north winds 5 to 10 knots becoming light and
variable. partly cloudy. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1004 am edt mon may 25 2026


slz024-252100-
saint lawrence river from ogdensburg to saint regis-
1004 am edt mon may 25 2026

.rest of today...west winds 10 knots or less. a chance of
showers. 
.tonight...west winds less than 10 knots becoming southwest.
mainly clear. 
.tuesday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. sunny.
.tuesday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots. mainly clear. 
.wednesday...west winds 10 knots or less becoming northwest.
partly cloudy. 
.thursday...north winds 5 to 10 knots becoming light and
variable. partly cloudy. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt mon may 25 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 30.1 inch high will settle across the region through 
tuesday. a cold front associated with a 29.8 inch low over new 
england will drop south across the lake on wednesday morning. a 30.2 
inch surface high pressure over canada will then start to expand 
south over the lake on thursday into friday.


loz063>065-252100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt mon may 25 2026

.rest of today...west winds 5 to 15 knots. patchy fog late this
morning. waves 2 feet or less. 
.tonight...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.tuesday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.tuesday night...southwest winds 10 to 15 knots becoming west.
waves 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots becoming north. waves 1 to
3 feet. 
.thursday...north winds 5 to 15 knots becoming west. waves 2 feet
or less. 
.friday...west winds 5 to 15 knots becoming northwest. waves 1 to
3 feet. 

$$