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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 am edt thu oct 22 2026


slz022-024-222100-
saint lawrence river from cape vincent to saint regis
1003 am edt thu oct 22 2026

.this afternoon...light and variable winds becoming north 5 to
10 knots. partly to mostly sunny. 
.tonight...north winds 5 to 10 knots becoming northeast. becoming
mainly clear. 
.friday...northeast winds 10 knots or less. sunny.
.friday night...light and variable winds. partly to mostly
cloudy. 
.saturday...light and variable winds. mainly clear. 
.sunday...south winds 10 knots or less becoming southwest. mainly
clear, then becoming partly cloudy. 
.monday...southwest winds 10 knots or less becoming north. mostly
cloudy. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu oct 22 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 high pressure ridge averaging 30.4 inches continues to 
exit toward the canadian maritimes before a weak cold front sweeps 
southeastward across the lake through this afternoon. behind the 
front, another ridge averaging 30.5 inches affects the lake through 
this weekend as the embedded high pressure center moves 
southeastward across the great lakes through friday and then moves 
farther southeastward to atlantic waters near long island and new 
jersey by sunday. this ridge should begin to exit southeastward 
sunday night and a cold front should sweep southeastward across the 
lake on monday.


loz062-222100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt thu oct 22 2026

.this afternoon...north winds 10 knots or less. waves 1 foot or
less. 
.tonight...north winds 10 to 15 knots becoming east. waves 2 feet
or less building to 2 to 3 feet. 
.friday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...east winds 5 to 15 knots becoming southeast.
waves 1 to 2 feet. 
.saturday...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.monday...west winds 5 to 15 knots becoming northeast. waves
2 feet or less. 

$$

fzus61 kbuf 221402
glflo 
expires:202610222100;;996645

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu oct 22 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 high pressure ridge averaging 30.4 inches continues to 
exit toward the canadian maritimes before a weak cold front sweeps 
southeastward across the lake through this afternoon. behind the 
front, another ridge averaging 30.5 inches affects the lake through 
this weekend as the embedded high pressure center moves 
southeastward across the great lakes through friday and then moves 
farther southeastward to atlantic waters near long island and new 
jersey by sunday. this ridge should begin to exit southeastward 
sunday night and a cold front should sweep southeastward across the 
lake on monday.


loz063>065-222100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt thu oct 22 2026

.this afternoon...north winds 5 to 10 knots. waves 1 foot or less.
.tonight...north winds 15 to 20 knots becoming northeast. waves
1 to 3 feet building to 2 to 4 feet. 
.friday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.friday night...northeast winds 10 knots or less becoming
southeast. waves 2 feet or less. 
.saturday...southeast winds 10 knots or less becoming south.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming north 15 to
20 knots. waves 1 to 3 feet. 

$$