Great Lakes Forecast
Issued by NWS
Issued by NWS
035 FZUS61 KBUF 062003 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 PM EDT Sat Jun 6 2026 SLZ022-024-070300- Saint Lawrence River from Cape Vincent to Saint Regis 403 PM EDT Sat Jun 6 2026 .TONIGHT...Southwest winds 5 to 15 knots becoming west. Showers with a chance of thunderstorms early, then showers late this evening. A chance of showers after midnight. .SUNDAY...West winds 5 to 10 knots becoming north. A chance of showers in the morning. .SUNDAY NIGHT...North winds less than 10 knots. Partly cloudy. .MONDAY...East winds less than 10 knots. Sunny. .MONDAY NIGHT...Light and variable winds. Clear. .TUESDAY...South winds less than 10 knots. Mainly clear, then becoming partly cloudy. .WEDNESDAY...South winds 10 knots or less. Showers likely with a chance of thunderstorms. .THURSDAY...Southwest winds 10 knots or less. A chance of showers. Winds and waves higher in and near thunderstorms. $$