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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt fri sep 11 2026


slz022-024-120900-
saint lawrence river from cape vincent to saint regis
1003 pm edt fri sep 11 2026

.overnight...light and variable winds. mainly clear. 
.saturday...south winds 10 knots or less becoming southwest.
sunny.
.saturday night...south winds 5 to 15 knots. a chance of showers.
.sunday...southwest winds 5 to 10 knots becoming west. a chance
of showers. 
.sunday night...west winds 5 to 10 knots. showers likely. 
.monday...northwest winds 5 to 10 knots becoming light and
variable. a chance of showers during the day. 
.tuesday...south winds 5 to 15 knots. a chance of showers tuesday
night. 
.wednesday...southwest winds 10 knots or less becoming north. a
chance of showers. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri sep 11 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 30.0 inches exits 
toward new england through saturday. a warm front will sweep 
northeastward across the lake saturday evening before a cold front 
sweeps eastward across the lake on sunday. behind the cold front, a 
ridge averaging 30.2 inches will slide eastward across the lower 
great lakes through monday. the ridge should exit toward new england 
on tuesday and allow a warm front to sweep northeastward across the 
lake. on wednesday, a cold front should sweep eastward across the 
lake and be followed by a ridge averaging 30.1 inches and building 
from the upper midwest.


loz062-120900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri sep 11 2026

.overnight...southeast winds 10 knots or less. waves 1 foot
or less. 
.saturday...south winds 5 to 10 knots becoming east. waves 1 foot
or less. 
.saturday night...southeast winds 5 to 15 knots becoming
southwest. waves 2 feet or less. 
.sunday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
showers. waves 1 to 3 feet. 
.monday...north winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 1 to 3 feet. 
.tuesday...south winds 5 to 15 knots becoming southwest. showers
likely tuesday night. waves 1 to 3 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 knots or less becoming north. a
chance of showers. waves 2 feet or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri sep 11 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 30.0 inches exits 
toward new england through saturday. a warm front will sweep 
northeastward across the lake saturday evening before a cold front 
sweeps eastward across the lake on sunday. behind the cold front, a 
ridge averaging 30.2 inches will slide eastward across the lower 
great lakes through monday. the ridge should exit toward new england 
on tuesday and allow a warm front to sweep northeastward across the 
lake. on wednesday, a cold front should sweep eastward across the 
lake and be followed by a ridge averaging 30.1 inches and building 
from the upper midwest.


loz063>065-120900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri sep 11 2026

.overnight...south winds 10 knots or less. waves 1 foot or
less. 
.saturday...southeast winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...south winds 15 to 20 knots becoming southwest.
a chance of showers. waves 2 to 4 feet. 
.sunday...southwest winds 10 to 15 knots becoming west. a chance
of showers in the afternoon. waves 1 to 3 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest. a
chance of showers. waves 2 to 4 feet. 
.monday...northwest winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots. a chance of showers
tuesday night. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming north and
diminishing to 10 knots or less. a chance of showers. waves 1 to
3 feet subsiding to 1 foot or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
352 am edt sat sep 12 2026

for waters beyond five nautical miles of shore on lake erie

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 warm front will lift across the region today before a cold 
front follows across the area on sunday. high pressure 30.30 will
move over the lake on monday and exit east on tuesday. a cold
front will approach the lake on tuesday night and settle south of
the lake for wednesday.


lez061-168-169-121415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
352 am edt sat sep 12 2026

.today...south winds 5 to 10 knots becoming southwest. a chance
of showers early this afternoon. a chance of showers and
thunderstorms late. waves 2 feet or less. 
.tonight...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms in the evening, then a chance of showers after
midnight. waves 1 to 3 feet. 
.sunday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.sunday night...northwest winds 15 to 20 knots becoming north.
waves 2 to 3 feet building to 3 to 5 feet. 
.monday...north winds 15 to 20 knots becoming southeast 5 to
15 knots. waves 3 to 5 feet subsiding to 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...south winds 10 knots or less becoming southwest. a
chance of showers during the day, then showers likely with a
chance of thunderstorms wednesday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$