Great Lakes Forecast
Issued by NWS
Issued by NWS
837 FZUS61 KBUF 062003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Sun Sep 6 2026 SLZ022-024-070300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Sun Sep 6 2026 .TONIGHT...Northwest winds less than 10 knots. Mainly clear. .MONDAY...Light and variable winds becoming northwest 5 to 10 knots. Sunny. .MONDAY NIGHT...West winds 10 knots or less becoming northwest. Partly to mostly cloudy. .TUESDAY...Light and variable winds. Partly sunny. .TUESDAY NIGHT...Light and variable winds becoming southeast 5 to 10 knots. Mostly cloudy. .WEDNESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers. .THURSDAY...Southwest winds 5 to 15 knots becoming northwest. Mostly cloudy. .FRIDAY...Northwest winds 10 knots or less becoming south. Becoming mainly clear. $$