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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm est fri nov 13 2026


slz022-024-140400-
saint lawrence river from cape vincent to saint regis
403 pm est fri nov 13 2026

.tonight...northwest winds less than 10 knots becoming west. a
chance of snow showers late. 
.saturday...west winds 10 knots or less becoming northwest. a
chance of snow showers early, then rain showers likely with a
chance of snow showers late in the morning. rain showers in the
afternoon. 
.saturday night...northwest winds 5 to 10 knots. rain showers
likely with a chance of snow showers in the evening. 
.sunday...northwest winds 5 to 10 knots. mostly cloudy. 
.sunday night...northwest winds less than 10 knots. mostly
cloudy. 
.monday...west winds less than 10 knots becoming southwest.
becoming mainly clear. 
.tuesday...southwest winds 5 to 10 knots. becoming mainly clear. 
.wednesday...southwest winds 5 to 10 knots. mainly clear, then
becoming partly cloudy. 

$$

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open lake forecast for lake america
national weather service buffalo ny
402 pm est fri nov 13 2026

for waters beyond five nautical miles of shore on lake america

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 trough averaging 29.9 inches will linger over the lake 
through saturday night as its parent coastal low of 29.3 inches 
wobbles northeastward from near nantucket to near newfoundland.
sunday through tuesday, a ridge averaging 30.5 inches will build 
from the upper midwest to the mid-atlantic states.


loz063>065-140400-
lake america open waters from hamlin beach to the saint lawrence
river-
402 pm est fri nov 13 2026

.tonight...north winds 10 to 15 knots becoming northwest. a
chance of waterspouts after midnight. a chance of rain showers
after midnight. waves 1 to 3 feet. 
.saturday...northwest winds 15 to 20 knots. a chance of
waterspouts. a chance of rain showers in the morning, then rain
showers in the afternoon. waves 2 to 4 feet building to 3 to
6 feet. 
.saturday night...northwest winds 15 to 20 knots becoming north.
a chance of waterspouts. showers in the evening, then a chance of
showers overnight. waves 3 to 6 feet. 
.sunday...north winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of waterspouts in the morning. a chance of
showers in the morning. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.sunday night...northwest winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.tuesday...west winds 15 to 20 knots. waves 2 to 4 feet. 
.wednesday...west winds 10 to 15 knots becoming southwest. waves
2 to 4 feet subsiding to 1 to 3 feet. 

$$