Great Lakes Forecast
Issued by NWS
Issued by NWS
668 FZUS61 KBUF 042003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Fri Sep 4 2026 SLZ022-024-050300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Fri Sep 4 2026 .TONIGHT...Northwest winds less than 10 knots. Patchy fog after midnight. .SATURDAY...North winds 10 knots or less becoming northeast. Patchy fog early. A chance of showers late. .SATURDAY NIGHT...Northeast winds 5 to 10 knots. Becoming mainly clear. .SUNDAY...Northeast winds 5 to 10 knots becoming north. Sunny. .SUNDAY NIGHT...North winds less than 10 knots. Patchy fog overnight. .MONDAY...Light and variable winds. Patchy fog during the day. .TUESDAY...Northwest winds 10 knots or less becoming southeast. A chance of showers Tuesday night. .WEDNESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers likely. $$