Great Lakes Forecast
Issued by NWS
Issued by NWS
058 FZUS61 KBUF 110803 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 AM EDT Tue Aug 11 2026 SLZ022-024-111500- Saint Lawrence River from Cape Vincent to Saint Regis 403 AM EDT Tue Aug 11 2026 .TODAY...West winds less than 10 knots. Mostly sunny. .TONIGHT...West winds less than 10 knots. Partly cloudy. .WEDNESDAY...Light and variable winds. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds less than 10 knots. A chance of showers and thunderstorms in the evening, then a chance of showers overnight. .THURSDAY...West winds 10 knots or less becoming northwest. Showers likely with a chance of thunderstorms. .FRIDAY...Northwest winds 10 knots or less. Becoming mainly clear. .SATURDAY...Northwest winds less than 10 knots. Partly cloudy. Winds and waves higher in and near thunderstorms. $$