Great Lakes Forecast
Issued by NWS
Issued by NWS
860 FZUS61 KBUF 052003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Sat Sep 5 2026 SLZ022-024-060300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Sat Sep 5 2026 .TONIGHT...Northeast winds 5 to 10 knots. A chance of showers early. .SUNDAY...Northeast winds 5 to 10 knots becoming north. Becoming mostly sunny. .SUNDAY NIGHT...North winds less than 10 knots. Patchy fog overnight. .MONDAY...Light and variable winds. Patchy fog in the morning. .MONDAY NIGHT...West winds less than 10 knots. Partly to mostly cloudy. .TUESDAY...Light and variable winds becoming south 5 to 10 knots. Mostly cloudy. .WEDNESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers. .THURSDAY...West winds 5 to 15 knots becoming northwest. Partly to mostly cloudy. $$