


Great Lakes Forecast
Issued by NWS
Issued by NWS
477 FZUS61 KBUF 061402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Mon Oct 6 2025 SLZ022-024-062100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Mon Oct 6 2025 .THIS AFTERNOON...Southwest winds 5 to 15 knots. Sunny. .TONIGHT...Southwest winds 10 knots or less. Partly cloudy. .TUESDAY...Southwest winds 10 to 15 knots. Showers with a chance of thunderstorms. .TUESDAY NIGHT...Southwest winds 5 to 10 knots becoming northwest. Showers with a chance of thunderstorms in the evening, then showers overnight. .WEDNESDAY...Northwest winds 5 to 15 knots becoming north. A chance of rain showers during the day. .THURSDAY...North winds 10 knots or less becoming south. Mainly clear. .FRIDAY...South winds 10 knots or less. Mainly clear, then becoming partly cloudy. Winds and waves higher in and near thunderstorms. $$