


Great Lakes Forecast
Issued by NWS
Issued by NWS
841 FZUS61 KBUF 062002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Mon Oct 6 2025 SLZ022-024-070300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Mon Oct 6 2025 .TONIGHT...Southwest winds 5 to 10 knots becoming south. Mainly clear through the early overnight, then becoming partly cloudy. .TUESDAY...Southwest winds 5 to 15 knots. A chance of showers and thunderstorms early, then showers with a chance of thunderstorms from late morning on. .TUESDAY NIGHT...West winds 5 to 10 knots becoming northwest. Showers with a chance of thunderstorms in the evening, then showers overnight. .WEDNESDAY...Northwest winds 5 to 10 knots. A chance of showers in the morning. .WEDNESDAY NIGHT...Northwest winds 5 to 10 knots becoming north. Mainly clear. .THURSDAY...North winds less than 10 knots. Mainly clear. .FRIDAY...South winds 10 knots or less. Mainly clear. .SATURDAY...South winds less than 10 knots becoming northeast. Mainly clear, then becoming partly cloudy. Winds and waves higher in and near thunderstorms. $$