Great Lakes Forecast
Issued by NWS
Issued by NWS
125 FZUS61 KBUF 151343 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY Issued by National Weather Service Cleveland OH 943 AM EDT Tue Sep 15 2026 SLZ022-024-152115- Saint Lawrence River from Cape Vincent to Saint Regis 943 AM EDT Tue Sep 15 2026 .REST OF TODAY...South winds 5 to 10 knots. Partly sunny late this morning, then becoming mostly cloudy. .TONIGHT...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers from late evening on. .WEDNESDAY...Southwest winds 10 knots or less becoming west. Mostly cloudy. .WEDNESDAY NIGHT...Light and variable winds. Mostly cloudy. .THURSDAY...Northeast winds less than 10 knots. A chance of showers during the day. .FRIDAY...North winds 10 knots or less becoming northeast. Mainly clear, then becoming partly cloudy. .SATURDAY...Northeast winds less than 10 knots becoming southeast 10 to 15 knots. A chance of showers during the day, then showers likely Saturday night. $$