


Great Lakes Forecast
Issued by NWS
Issued by NWS
286 FZUS61 KBUF 251402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Wed Jun 25 2025 SLZ022-024-252100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Wed Jun 25 2025 .THIS AFTERNOON...Northeast winds less than 10 knots becoming north. Sunny. .TONIGHT...North winds 10 knots or less becoming northeast. Mainly clear early, then becoming mostly cloudy. .THURSDAY...Northeast winds 5 to 10 knots. Partly sunny in the morning, then becoming mostly cloudy. .THURSDAY NIGHT...Northeast winds 10 knots or less becoming east. A chance of showers overnight. .FRIDAY...East winds 5 to 10 knots becoming south. Showers likely during the day, then showers with a chance of thunderstorms Friday night. .SATURDAY...South winds 10 knots or less becoming west. Showers with a chance of thunderstorms during the day, then a chance of showers Saturday night. .SUNDAY...West winds less than 10 knots becoming southwest. Partly cloudy. Winds and waves higher in and near thunderstorms. $$