Great Lakes Forecast
Issued by NWS
Issued by NWS
099 FZUS61 KBUF 101403 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 AM EDT Thu Sep 10 2026 SLZ022-024-102100- Saint Lawrence River from Cape Vincent to Saint Regis 1003 AM EDT Thu Sep 10 2026 .THIS AFTERNOON...West winds 10 to 15 knots. Mostly sunny. .TONIGHT...Northwest winds 5 to 10 knots becoming light and variable. Mostly cloudy early, then clearing. .FRIDAY...Light and variable winds. Sunny. .FRIDAY NIGHT...Southwest winds less than 10 knots becoming south. Mainly clear. .SATURDAY...South winds 5 to 15 knots. A chance of showers Saturday night. .SUNDAY...Southwest winds 10 knots or less becoming northwest. A chance of showers. .MONDAY...North winds 10 knots or less becoming southeast. A chance of showers Monday night. $$