Great Lakes Forecast
Issued by NWS
Issued by NWS
392 FZUS61 KBUF 300804 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 AM EDT Sat May 30 2026 SLZ022-024-301500- Saint Lawrence River from Cape Vincent to Saint Regis 403 AM EDT Sat May 30 2026 .TODAY...Northeast winds 15 to 20 knots diminishing to 5 to 15 knots. Becoming mostly sunny. .TONIGHT...Northeast winds less than 10 knots. Mainly clear through the early overnight, then becoming mostly cloudy. .SUNDAY...Light and variable winds becoming west 5 to 10 knots. A chance of showers in the afternoon. .SUNDAY NIGHT...West winds 5 to 10 knots becoming light and variable. A chance of showers. .MONDAY...North winds less than 10 knots. Mainly clear. .TUESDAY...Northwest winds less than 10 knots. Partly cloudy. .WEDNESDAY...Northeast winds less than 10 knots. Mainly clear. $$