


Great Lakes Forecast
Issued by NWS
Issued by NWS
121 FZUS61 KBUF 241402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Sun Aug 24 2025 SLZ022-024-242100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Sun Aug 24 2025 .REST OF TODAY...Southwest winds 5 to 10 knots. A chance of showers late this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 10 knots or less. A chance of showers after midnight. .MONDAY...Southwest winds 5 to 15 knots. A chance of showers. .MONDAY NIGHT...West winds 5 to 10 knots. A chance of showers in the evening. .TUESDAY...West winds 10 knots or less. Partly cloudy. .WEDNESDAY...West winds 10 knots or less becoming southwest. Mainly clear, then becoming partly cloudy. .THURSDAY...Southwest winds 10 knots or less becoming northwest. A chance of showers. Winds and waves higher in and near thunderstorms. $$