Great Lakes Forecast
Issued by NWS
Issued by NWS
487 FZUS61 KBUF 060203 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Fri Jun 5 2026 SLZ022-024-060900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Fri Jun 5 2026 .OVERNIGHT...South winds less than 10 knots becoming southwest. A chance of showers late. .SATURDAY...South winds 5 to 15 knots becoming southwest. Showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. .SATURDAY NIGHT...Southwest winds 10 knots or less becoming west. Showers with a chance of thunderstorms in the evening, then showers likely overnight. .SUNDAY...Northwest winds 5 to 10 knots becoming north. A chance of showers. .SUNDAY NIGHT...Northeast winds less than 10 knots. A chance of showers in the evening. .MONDAY...Northeast winds less than 10 knots. Mainly clear. .TUESDAY...Light and variable winds. Mainly clear. .WEDNESDAY...South winds less than 10 knots. A chance of showers. Winds and waves higher in and near thunderstorms. $$