


Great Lakes Forecast
Issued by NWS
Issued by NWS
122 FZUS61 KBUF 170203 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 PM EDT Wed Jul 16 2025 SLZ022-024-170900- Saint Lawrence River from Cape Vincent to Saint Regis 1003 PM EDT Wed Jul 16 2025 .OVERNIGHT...Southwest winds less than 10 knots becoming south. A chance of showers. .THURSDAY...South winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of showers early, then a chance of showers and thunderstorms late in the morning. Showers likely with a chance of thunderstorms in the afternoon. .THURSDAY NIGHT...West winds 5 to 15 knots becoming northwest. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. .FRIDAY...Northwest winds 10 knots or less. Sunny. .FRIDAY NIGHT...West winds less than 10 knots. Mainly clear in the evening, then becoming partly cloudy. .SATURDAY...Southwest winds 10 knots or less. A chance of showers Saturday night. .SUNDAY...North winds less than 10 knots. A chance of showers during the day. .MONDAY...North winds less than 10 knots becoming southeast. Mainly clear. Winds and waves higher in and near thunderstorms. $$