


Great Lakes Forecast
Issued by NWS
Issued by NWS
637 FZUS61 KBUF 281402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Sat Jun 28 2025 SLZ022-024-282100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Sat Jun 28 2025 .THIS AFTERNOON...Southwest winds 10 to 15 knots. A chance of showers, then a chance of showers and thunderstorms late. .TONIGHT...West winds 10 knots or less. A chance of showers early. .SUNDAY...West winds 10 knots or less becoming southwest. Becoming mostly sunny. .SUNDAY NIGHT...Southwest winds 10 knots or less becoming south. Mainly clear in the evening, then becoming partly cloudy. .MONDAY...Southwest winds 5 to 10 knots becoming south. Showers with a chance of thunderstorms Monday night. .TUESDAY...Southwest winds 5 to 10 knots. Showers with a chance of thunderstorms during the day, then a chance of showers and thunderstorms Tuesday night. .WEDNESDAY...Southwest winds 10 knots or less. Mainly clear, then becoming partly cloudy. Winds and waves higher in and near thunderstorms. $$