


Great Lakes Forecast
Issued by NWS
Issued by NWS
928 FZUS61 KBUF 162001 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 401 PM EDT Fri May 16 2025 SLZ022-024-170300- Saint Lawrence River from Cape Vincent to Saint Regis 401 PM EDT Fri May 16 2025 .TONIGHT...Southwest winds 10 knots or less becoming south. Partly to mostly cloudy. .SATURDAY...Southeast winds 10 knots or less becoming southwest 10 to 15 knots. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southwest winds 5 to 15 knots. Showers likely with a chance of thunderstorms in the evening, then showers likely overnight. .SUNDAY...Southwest winds 5 to 10 knots becoming northwest. Showers. .SUNDAY NIGHT...Northwest winds 5 to 10 knots. Showers in the evening, then a chance of showers overnight. .MONDAY...Northwest winds 5 to 10 knots. Mostly cloudy. .TUESDAY...North winds 10 knots or less becoming northeast. Mostly cloudy. .WEDNESDAY...Northeast winds 5 to 10 knots. A chance of showers. Winds and waves higher in and near thunderstorms. $$