Great Lakes Forecast
Issued by NWS
Issued by NWS
533 FZUS61 KBUF 082003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Mon Jun 8 2026 SLZ022-024-090300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Mon Jun 8 2026 .TONIGHT...Southwest winds less than 10 knots. Mainly clear. .TUESDAY...Southwest winds 10 knots or less. Mostly sunny. .TUESDAY NIGHT...Southwest winds less than 10 knots. A chance of showers overnight. .WEDNESDAY...South winds 5 to 10 knots. Showers in the morning, then showers with a chance of thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 10 knots or less. Showers with a chance of thunderstorms in the evening, then showers likely overnight. .THURSDAY...Southwest winds 10 knots or less. A chance of showers and thunderstorms. .FRIDAY...South winds 5 to 10 knots becoming southwest. Showers likely with a chance of thunderstorms. .SATURDAY...Southwest winds 10 knots or less. Mainly clear, then becoming partly cloudy. Winds and waves higher in and near thunderstorms. $$