FZUS61 KBUF 200803
GLFSL 

Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
403 AM EDT Wed May 20 2026

SLZ022-024-201500-
Saint Lawrence River from Cape Vincent to Saint Regis
403 AM EDT Wed May 20 2026

.TODAY...West winds 5 to 15 knots. Mostly cloudy early, then
becoming mostly sunny. 
.TONIGHT...Northwest winds 5 to 10 knots becoming north. Mainly
clear early, then becoming partly cloudy. 
.THURSDAY...North winds 10 knots or less. Sunny.
.THURSDAY NIGHT...North winds less than 10 knots. Mainly clear in
the evening, then becoming partly cloudy. 
.FRIDAY...East winds less than 10 knots. Partly cloudy, then
becoming mostly cloudy. 
.SATURDAY...East winds 5 to 10 knots becoming southeast. A chance
of showers during the day, then showers likely Saturday night. 
.SUNDAY...Southeast winds 5 to 10 knots becoming south. Showers
likely. 

$$