fzus61 kbuf 292003
glfsl 
expires:202608300300;;569362

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt sat aug 29 2026


slz022-024-300300-
saint lawrence river from cape vincent to saint regis
403 pm edt sat aug 29 2026

.tonight...southwest winds 5 to 10 knots. a chance of showers
late. 
.sunday...southwest winds 5 to 10 knots. a chance of showers
through early afternoon, then a chance of showers and
thunderstorms late. 
.sunday night...southwest winds 5 to 10 knots becoming light and
variable. a chance of showers and thunderstorms in the evening. 
.monday...light and variable winds. mostly cloudy in the morning,
then becoming mostly sunny. 
.monday night...light and variable winds. a chance of showers in
the evening, then showers likely overnight. 
.tuesday...northeast winds less than 10 knots becoming east.
showers likely during the day, then a chance of showers tuesday
night. 
.wednesday...southeast winds 10 knots or less becoming south.
showers likely with a chance of thunderstorms. 
.thursday...southwest winds less than 10 knots becoming
northwest. a chance of showers. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 292002
glflo 
expires:202608300300;;569337

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat aug 29 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 exits slowly 
toward new england through sunday before a weak cold front drifts 
southward across lake ontario sunday night. behind the front, a 
ridge averaging 30.1 inches builds from eastern canada through 
tuesday. that ridge should exit eastward tuesday night and allow a 
warm front to sweep northward across lake ontario. a cold front 
should sweep eastward across the lake late wednesday. behind the 
cold front, a trough averaging 29.9 inches should linger over lake 
ontario through thursday.


loz062-300300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sat aug 29 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 292002
glflo 
expires:202608300300;;569338

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sat aug 29 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 exits slowly 
toward new england through sunday before a weak cold front drifts 
southward across lake ontario sunday night. behind the front, a 
ridge averaging 30.1 inches builds from eastern canada through 
tuesday. that ridge should exit eastward tuesday night and allow a 
warm front to sweep northward across lake ontario. a cold front 
should sweep eastward across the lake late wednesday. behind the 
cold front, a trough averaging 29.9 inches should linger over lake 
ontario through thursday.


loz063>065-300300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sat aug 29 2026

.tonight...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 5 to 15 knots becoming west. a chance
of showers in the afternoon. waves 2 feet or less. 
.sunday night...west winds 10 knots or less becoming northwest. a
chance of showers. waves 2 feet or less. 
.monday...east winds less than 10 knots. a chance of showers in
the afternoon. waves 1 foot or less. 
.monday night...east winds 10 knots or less becoming south.
showers likely. waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots. showers likely. waves
1 foot or less. 
.wednesday...south winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 2 feet or
less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
likely during the day, then a chance of showers thursday night.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$