Great Lakes Forecast
Issued by NWS
Issued by NWS
895 FZUS61 KBUF 302003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Sun Aug 30 2026 SLZ022-024-310300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Sun Aug 30 2026 .TONIGHT...Southwest winds 5 to 10 knots becoming light and variable. Showers likely with a chance of thunderstorms early. Areas of fog from late evening on. .MONDAY...Light and variable winds. Patchy fog early. A chance of showers late. .MONDAY NIGHT...Light and variable winds. A chance of showers in the evening, then showers likely overnight. .TUESDAY...Northeast winds 10 knots or less. Showers likely. .TUESDAY NIGHT...Northeast winds less than 10 knots. Showers likely in the evening, then a chance of showers overnight. .WEDNESDAY...South winds 10 knots or less becoming southwest. Showers likely with a chance of thunderstorms. .THURSDAY...Southwest winds less than 10 knots. A chance of showers. .FRIDAY...Northwest winds less than 10 knots becoming north. A chance of showers during the day. Winds and waves higher in and near thunderstorms. $$