Great Lakes Forecast
Issued by NWS
Issued by NWS
807 FZUS61 KBUF 300802 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 AM EDT Tue Sep 30 2025 SLZ022-024-301500- Saint Lawrence River from Cape Vincent to Saint Regis 402 AM EDT Tue Sep 30 2025 .TODAY...North winds 5 to 10 knots. Sunny. .TONIGHT...North winds 5 to 10 knots becoming northeast. Mainly clear. .WEDNESDAY...Northeast winds 5 to 10 knots. Sunny. .WEDNESDAY NIGHT...Northeast winds 10 knots or less. Mainly clear. .THURSDAY...East winds less than 10 knots. Partly cloudy. .FRIDAY...South winds 10 knots or less becoming southwest. Mainly clear. .SATURDAY...Southwest winds 10 knots or less. Mainly clear, then becoming partly cloudy. $$