FZUS61 KBUF 191414 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1014 AM EDT Thu Sep 19 2024 SLZ022-024-192115- Saint Lawrence River from Cape Vincent to Saint Regis 1014 AM EDT Thu Sep 19 2024 .THIS AFTERNOON...Northeast winds under 10 knots. Sunny. .TONIGHT...Northeast winds less than 10 knots. Mainly clear. .FRIDAY...Northeast winds 10 knots or less. Sunny. .FRIDAY NIGHT...Northeast winds 10 knots or less becoming east. Partly cloudy. .SATURDAY AND SUNDAY...East winds 10 knots or less. Partly to mostly cloudy. .MONDAY...Southeast winds 5 to 10 knots. A chance of showers. $$