Great Lakes Forecast
Issued by NWS
Issued by NWS
533 FZUS61 KBUF 242003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Fri Jul 24 2026 SLZ022-024-250300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Fri Jul 24 2026 .TONIGHT...Southwest winds 5 to 10 knots becoming light and variable. Mainly clear. .SATURDAY...South winds 10 knots or less becoming southwest. Sunny. .SATURDAY NIGHT...Southwest winds less than 10 knots. Partly to mostly cloudy. .SUNDAY...South winds 10 knots or less becoming southwest. Mostly sunny. .SUNDAY NIGHT...Southwest winds less than 10 knots. A chance of showers overnight. .MONDAY...South winds 10 knots or less. Showers likely with a chance of thunderstorms. .TUESDAY...South winds 10 knots or less becoming north. Showers with a chance of thunderstorms. .WEDNESDAY...North winds 10 knots or less becoming northwest. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$