


Great Lakes Forecast
Issued by NWS
Issued by NWS
105 FZUS61 KBUF 130802 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 AM EDT Sun Jul 13 2025 SLZ022-024-131500- Saint Lawrence River from Cape Vincent to Saint Regis 402 AM EDT Sun Jul 13 2025 .TODAY...South winds 10 to 15 knots becoming southwest. A chance of showers and thunderstorms late this morning. Showers with thunderstorms likely this afternoon. .TONIGHT...Southwest winds 10 knots or less. Showers likely with a chance of thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .MONDAY...Southwest winds 10 knots or less. Becoming mostly sunny. .MONDAY NIGHT...Southwest winds 10 knots or less. Mainly clear. .TUESDAY...Southwest winds less than 10 knots. Mainly clear. .WEDNESDAY...Southwest winds 10 knots or less becoming south. A chance of showers Wednesday night. .THURSDAY...Southwest winds 5 to 10 knots becoming west. Showers likely with a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$