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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt mon sep 28 2026


slz022-024-290900-
saint lawrence river from cape vincent to saint regis
1003 pm edt mon sep 28 2026

.overnight...northeast winds less than 10 knots becoming
north. cloudy.
.tuesday...north winds less than 10 knots. cloudy in the morning,
then clearing. 
.tuesday night...light and variable winds. mainly clear in the
evening, then becoming partly cloudy. 
.wednesday...south winds 10 knots or less becoming southwest.
mostly cloudy in the morning, then becoming partly sunny. 
.wednesday night...southwest winds 10 knots or less becoming
south. mostly cloudy. 
.thursday...south winds 5 to 15 knots becoming west. a chance of
showers thursday night. 
.friday...northwest winds less than 10 knots becoming north. a
chance of showers during the day. 
.saturday...north winds less than 10 knots becoming east. a
chance of showers saturday night. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon sep 28 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 29.8 inch low along the southern shores of cape cod 
will continue to drift northeast along the new england coast through 
tuesday while filling to 29.9 inches. this low will finally 
dissipate over the north atlantic wednesday as a 30.1 inch high 
builds to just off the mid atlantic coast. a cold front over the 
upper great lakes wednesday night will cross the lower great lakes 
thursday night. a 30.4 inch high is then forecast to build into the 
upper great lakes friday and the lower great lakes by saturday, 
before exiting into northern maine sunday.


loz063>065-290900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt mon sep 28 2026

.overnight...north winds 5 to 15 knots. waves 2 feet or
less. 
.tuesday...north winds 10 knots or less becoming northwest. waves
1 foot or less. 
.tuesday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...southeast winds 10 knots or less becoming
south 10 to 15 knots. waves 2 feet or less. 
.thursday...south winds 15 to 20 knots becoming west 10 to
15 knots. showers likely thursday night. waves 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming north. showers
likely during the day, then a chance of showers friday night.
waves 1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast. a
chance of showers saturday night. waves 2 feet or less. 

$$