Great Lakes Forecast
Issued by NWS
Issued by NWS
865 FZUS61 KBUF 040803 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 AM EDT Fri Sep 4 2026 SLZ022-024-041500- Saint Lawrence River from Cape Vincent to Saint Regis 403 AM EDT Fri Sep 4 2026 .TODAY...Light and variable winds becoming northwest 5 to 10 knots. Patchy fog early. .TONIGHT...Northwest winds less than 10 knots becoming north. Partly cloudy. .SATURDAY...North winds 10 knots or less becoming northeast. Partly sunny. .SATURDAY NIGHT...Northeast winds 10 knots or less. Partly cloudy. .SUNDAY...Northeast winds 5 to 10 knots becoming light and variable. Partly cloudy, then becoming clear. .MONDAY...Light and variable winds. Mainly clear, then becoming mostly cloudy. .TUESDAY...North winds 10 knots or less becoming southeast. Partly to mostly cloudy. $$