Great Lakes Forecast
Issued by NWS
Issued by NWS
180 FZUS61 KBUF 131402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Sun Sep 13 2026 SLZ022-024-132100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Sun Sep 13 2026 .THIS AFTERNOON...Southwest winds 5 to 10 knots. A chance of showers early. A chance of showers and thunderstorms late. .TONIGHT...West winds 5 to 10 knots becoming northwest. A chance of showers. .MONDAY...Northwest winds 5 to 10 knots. Sunny. .MONDAY NIGHT...Northwest winds less than 10 knots. Mainly clear. .TUESDAY...South winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of showers Tuesday night. .WEDNESDAY...Southwest winds 10 knots or less becoming northeast. A chance of showers during the day. .THURSDAY...Northeast winds 10 knots or less becoming north. A chance of showers. Winds and waves higher in and near thunderstorms. $$