


Great Lakes Forecast
Issued by NWS
Issued by NWS
313 FZUS61 KBUF 171402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Tue Jun 17 2025 SLZ022-024-172100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Tue Jun 17 2025 .THIS AFTERNOON...South winds 5 to 10 knots. Mostly cloudy. .TONIGHT...South winds 5 to 10 knots. A chance of showers late. .WEDNESDAY...Southwest winds 5 to 10 knots. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 10 knots or less becoming south. A chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms overnight. .THURSDAY...South winds 5 to 15 knots becoming west. Showers with a chance of thunderstorms. .FRIDAY...West winds 10 knots or less becoming southwest. A chance of showers. .SATURDAY...Southwest winds 10 knots or less. A chance of showers. Winds and waves higher in and near thunderstorms. $$