Great Lakes Forecast
Issued by NWS
Issued by NWS
201 FZUS61 KBUF 220803 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 AM EDT Wed Jul 22 2026 SLZ022-024-221500- Saint Lawrence River from Cape Vincent to Saint Regis 403 AM EDT Wed Jul 22 2026 .TODAY...West winds 10 to 15 knots. A chance of showers. .TONIGHT...West winds 5 to 15 knots becoming southwest less than 10 knots. Mostly cloudy in the evening, then becoming partly cloudy. .THURSDAY...Southwest winds 10 knots or less. Sunny. .THURSDAY NIGHT...Southwest winds 10 knots or less. Mainly clear. .FRIDAY...Southwest winds less than 10 knots. Mainly clear. .SATURDAY...South winds 10 knots or less. Mainly clear, then becoming partly cloudy. .SUNDAY...South winds 10 knots or less becoming southwest. A chance of showers. $$