FZUS61 KBUF 070205 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1005 PM EDT Sun Apr 6 2025 SLZ022-024-070915- Saint Lawrence River from Cape Vincent to Saint Regis 1005 PM EDT Sun Apr 6 2025 .OVERNIGHT...North winds less than 10 knots becoming east. Mostly cloudy. .MONDAY...East winds 10 knots or less becoming south. Partly to mostly sunny. .MONDAY NIGHT...South winds less than 10 knots becoming southwest and increasing to 15 to 20 knots overnight. Rain and snow showers in the evening, then snow showers overnight. .TUESDAY...West winds 15 to 20 knots becoming northwest. Snow showers. .TUESDAY NIGHT...Northwest winds 5 to 15 knots becoming west. Mostly cloudy. .WEDNESDAY...West winds 5 to 10 knots becoming south. Partly cloudy. .THURSDAY...South winds 10 knots or less becoming northeast. Rain likely with a chance of snow during the day, then rain likely Thursday night. .FRIDAY...Northeast winds 10 knots or less. A chance of rain. $$