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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm edt fri aug 14 2026


slz022-024-150900-
saint lawrence river from cape vincent to saint regis
1002 pm edt fri aug 14 2026

.overnight...light and variable winds. areas of fog.

.saturday...northeast winds less than 10 knots. areas of fog
early. 
.saturday night...light and variable winds. partly cloudy. 
.sunday...southeast winds less than 10 knots becoming east.
showers with a chance of thunderstorms in the afternoon. 
.sunday night...east winds 10 knots or less becoming north.
showers with a chance of thunderstorms in the evening, then
showers likely overnight. 
.monday...northwest winds less than 10 knots. mostly cloudy, then
clearing. 
.tuesday...light and variable winds. mainly clear, then becoming
partly cloudy. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
during the day, then showers likely wednesday night. 

winds and waves higher in and near thunderstorms.

$$

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expires:202608150900;;205878

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri aug 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 high pressure ridge averaging 30.2 inches builds from the canadian 
prairies before settling over lake ontario and vicinity by saturday. 
the ridge begins to exit eastward saturday night and a low of 29.7 
inches should move generally east-southeastward from near the 
northern great lakes to near the gulf of maine saturday night 
through monday. this low track should allow a warm front to sweep 
northeastward across lake ontario saturday night and especially on 
sunday before a cold front sweeps eastward across the lake sunday 
evening through sunday night. behind the cold front, a high pressure 
ridge averaging 30.0 inches should build slowly from the upper 
midwest through tuesday. a 29.7 inch low is expected to move across 
the central great lakes wednesday and move across or near lake 
ontario wednesday night.


loz062-150900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri aug 14 2026

.overnight...east winds 10 knots or less. waves 1 foot or
less. 
.saturday...east winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...east winds 10 to 15 knots becoming southeast.
waves 1 to 2 feet. 
.sunday...southeast winds around 10 knots becoming east. a chance
of showers in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 2 feet. 
.sunday night...north winds around 10 knots becoming northwest.
showers with a chance of thunderstorms in the evening. waves 1 to
2 feet. 
.monday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southwest. waves
2 feet or less. 
.wednesday...southwest winds 5 to 15 knots becoming west. a
chance of showers during the day, then showers likely wednesday
night. waves 2 feet or less building to 2 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri aug 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 high pressure ridge averaging 30.2 inches builds from the canadian 
prairies before settling over lake ontario and vicinity by saturday. 
the ridge begins to exit eastward saturday night and a low of 29.7 
inches should move generally east-southeastward from near the 
northern great lakes to near the gulf of maine saturday night 
through monday. this low track should allow a warm front to sweep 
northeastward across lake ontario saturday night and especially on 
sunday before a cold front sweeps eastward across the lake sunday 
evening through sunday night. behind the cold front, a high pressure 
ridge averaging 30.0 inches should build slowly from the upper 
midwest through tuesday. a 29.7 inch low is expected to move across 
the central great lakes wednesday and move across or near lake 
ontario wednesday night.


loz063>065-150900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri aug 14 2026

.overnight...northeast winds 10 knots or less becoming
east. waves 1 foot or less. 
.saturday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday night...northeast winds 5 to 10 knots becoming
southeast. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots. a chance of showers in
the morning, then showers with a chance of thunderstorms in the
afternoon. waves 2 feet or less. 
.sunday night...south winds 10 to 15 knots becoming northwest.
showers with a chance of thunderstorms in the evening, then
showers likely overnight. waves 1 to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southwest 10 to
15 knots. waves 2 feet or less. 
.wednesday...southwest winds 5 to 15 knots becoming west 15 to
20 knots. a chance of showers during the day, then showers likely
wednesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

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glfle 
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open lake forecast for lake erie
national weather service cleveland oh
338 am edt sat aug 15 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 tonight into sunday as 
low pressure 29.90 inches moves east across the upper great lakes.
this low will push a cold front across lake erie as it moves east
into southern quebec. high pressure 30.10 inches will build across
the region monday and tuesday before the next cold front 
approaches from the west on wednesday.


lez061-168-169-151415-
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-
338 am edt sat aug 15 2026

.today...southeast winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tonight...east winds 5 to 15 knots becoming southeast. a slight
chance of showers after midnight. a slight chance of showers and
thunderstorms late. waves 2 feet or less. 
.sunday...southeast winds 5 to 15 knots becoming southwest. a
chance of showers. waves 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming northwest. a
chance of showers. waves 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming north. waves
1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers and thunderstorms during the day, then a chance
of showers wednesday night. waves 1 to 3 feet building to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$