FZUS61 KBUF 240202 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Thu Oct 23 2025 SLZ022-024-240900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Thu Oct 23 2025 .OVERNIGHT...West winds 10 knots or less. A chance of rain showers late. .FRIDAY...West winds 10 knots or less becoming northwest. A chance of rain showers. .FRIDAY NIGHT...Northwest winds less than 10 knots. Mostly cloudy. .SATURDAY...Light and variable winds. Partly sunny. .SATURDAY NIGHT...Northwest winds less than 10 knots. A chance of rain showers overnight. .SUNDAY...North winds less than 10 knots. A chance of rain showers during the day. .MONDAY...Northeast winds 10 knots or less. Becoming mainly clear. .TUESDAY...Northeast winds 10 knots or less. Partly cloudy. $$