Great Lakes Forecast
Issued by NWS
Issued by NWS
104 FZUS61 KBUF 180203 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 PM EDT Thu Sep 17 2026 SLZ022-024-180900- Saint Lawrence River from Cape Vincent to Saint Regis 1003 PM EDT Thu Sep 17 2026 .OVERNIGHT...Light and variable winds. Partly cloudy. .FRIDAY...Northwest winds 5 to 10 knots becoming north. Sunny. .FRIDAY NIGHT...North winds 5 to 10 knots becoming northeast. Partly cloudy. .SATURDAY...Northeast winds less than 10 knots. Sunny. .SATURDAY NIGHT...Light and variable winds. Partly to mostly cloudy. .SUNDAY...Northeast winds 10 knots or less becoming north. A chance of showers during the day. .MONDAY...North winds 5 to 10 knots becoming northeast. Partly to mostly cloudy. .TUESDAY...Northeast winds 5 to 10 knots. Becoming mainly clear. $$