Great Lakes Forecast
Issued by NWS
Issued by NWS
153 FZUS61 KBUF 252002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Tue Aug 25 2026 SLZ022-024-260300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Tue Aug 25 2026 .TONIGHT...West winds less than 10 knots. A chance of showers early. Patchy fog from late evening on. .WEDNESDAY...Light and variable winds. Patchy fog in the morning. .WEDNESDAY NIGHT...South winds 10 knots or less. Partly cloudy. .THURSDAY...South winds 10 to 15 knots becoming southwest. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds 10 knots or less becoming west. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms overnight. .FRIDAY...Northwest winds less than 10 knots. Partly cloudy, then becoming mainly clear. .SATURDAY...Light and variable winds. Mainly clear. .SUNDAY...Southwest winds 10 knots or less. A chance of showers Sunday night. Winds and waves higher in and near thunderstorms. $$