


Great Lakes Forecast
Issued by NWS
Issued by NWS
675 FZUS61 KBUF 041402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Fri Jul 4 2025 SLZ022-024-042100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Fri Jul 4 2025 .THIS AFTERNOON...Northwest winds 5 to 10 knots. Sunny. .TONIGHT...West winds 10 knots or less becoming south. Mainly clear through the early overnight, then becoming partly cloudy. .SATURDAY...Southwest winds 10 knots or less. Partly sunny. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Partly cloudy. .SUNDAY...Southwest winds 5 to 15 knots. A chance of showers Sunday night. .MONDAY...Southwest winds 5 to 10 knots becoming light and variable. A chance of showers and thunderstorms. .TUESDAY...North winds less than 10 knots. Partly cloudy. Winds and waves higher in and near thunderstorms. $$