


Great Lakes Forecast
Issued by NWS
Issued by NWS
074 FZUS61 KBUF 242002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Sun Aug 24 2025 SLZ022-024-250300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Sun Aug 24 2025 .TONIGHT...Southwest winds 10 knots or less. A chance of showers early. .MONDAY...Southwest winds 10 knots or less increasing to 10 to 15 knots. A chance of showers. .MONDAY NIGHT...Southwest winds 5 to 15 knots becoming west. A chance of showers in the evening. .TUESDAY...West winds 5 to 10 knots. A chance of showers in the afternoon. .TUESDAY NIGHT...West winds 10 knots or less. A chance of showers in the evening. .WEDNESDAY...West winds 10 knots or less becoming southwest. Partly cloudy. .THURSDAY...Southwest winds 10 knots or less becoming northwest. A chance of showers. .FRIDAY...Northwest winds less than 10 knots becoming west. Partly cloudy. $$