FZUS61 KBUF 242002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Fri Oct 24 2025 SLZ022-024-250300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Fri Oct 24 2025 .TONIGHT...Northwest winds 5 to 10 knots becoming light and variable. Partly cloudy. .SATURDAY...Light and variable winds. Partly sunny through early afternoon, then becoming mostly cloudy. .SATURDAY NIGHT...Northwest winds less than 10 knots. Mostly cloudy. .SUNDAY...Northwest winds less than 10 knots becoming north. A chance of snow showers. .SUNDAY NIGHT...North winds less than 10 knots. Partly cloudy. .MONDAY...Northeast winds 10 knots or less. Partly cloudy. .TUESDAY...Northeast winds 10 knots or less. Partly to mostly cloudy. .WEDNESDAY...Northeast winds 10 knots or less becoming north. A chance of rain showers. $$