


Great Lakes Forecast
Issued by NWS
Issued by NWS
594 FZUS61 KBUF 042002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Fri Jul 4 2025 SLZ022-024-050300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Fri Jul 4 2025 .TONIGHT...West winds less than 10 knots becoming south. Mainly clear this evening, then becoming partly cloudy. .SATURDAY...South winds 10 knots or less becoming southwest. Partly to mostly sunny. .SATURDAY NIGHT...Southwest winds 10 knots or less. Partly cloudy. .SUNDAY...Southwest winds 5 to 10 knots. Partly to mostly sunny. .SUNDAY NIGHT...Southwest winds 5 to 10 knots. A chance of showers and thunderstorms in the evening, then a chance of showers overnight. .MONDAY...Southwest winds 10 knots or less becoming west. A chance of showers and thunderstorms. .TUESDAY...Northwest winds less than 10 knots. Becoming mainly clear. .WEDNESDAY...North winds less than 10 knots. Partly to mostly cloudy. Winds and waves higher in and near thunderstorms. $$