Great Lakes Forecast
Issued by NWS
Issued by NWS
227 FZUS61 KBUF 091403 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 AM EDT Sat May 9 2026 SLZ022-024-092100- Saint Lawrence River from Cape Vincent to Saint Regis 1003 AM EDT Sat May 9 2026 .THIS AFTERNOON...South winds 5 to 10 knots. Mostly sunny. .TONIGHT...South winds 5 to 15 knots becoming southwest. Showers. A chance of showers late. .SUNDAY...Southwest winds 5 to 15 knots. Mostly sunny. .SUNDAY NIGHT...Southwest winds 5 to 15 knots becoming west less than 10 knots. Partly cloudy in the evening, then becoming mainly clear. .MONDAY...West winds less than 10 knots. A chance of rain showers. .TUESDAY...Northwest winds less than 10 knots. Mainly clear, then becoming partly cloudy. .WEDNESDAY...Southeast winds 5 to 10 knots. A chance of rain showers. $$