FZUS61 KBUF 150203 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 PM EDT Wed Oct 14 2026 SLZ022-024-150900- Saint Lawrence River from Cape Vincent to Saint Regis 1003 PM EDT Wed Oct 14 2026 .OVERNIGHT...Northwest winds 5 to 10 knots becoming north. Partly to mostly cloudy. .THURSDAY...North winds 10 knots or less becoming northeast. Partly to mostly sunny. .THURSDAY NIGHT...Northeast winds 10 knots or less becoming east. Rain showers overnight. .FRIDAY...East winds 5 to 15 knots becoming northwest. Showers. .FRIDAY NIGHT...Northwest winds 10 to 15 knots increasing to 15 to 20 knots. Rain showers in the evening, then a chance of rain showers overnight. .SATURDAY...Northwest winds 5 to 15 knots becoming west less than 10 knots. Partly cloudy. .SUNDAY...Southwest winds 5 to 15 knots. Mainly clear. .MONDAY...Southwest winds 5 to 15 knots diminishing to less than 10 knots. Mainly clear, then becoming partly cloudy. $$