


Great Lakes Forecast
Issued by NWS
Issued by NWS
223 FZUS61 KBUF 010802 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 AM EDT Mon Sep 1 2025 SLZ022-024-011500- Saint Lawrence River from Cape Vincent to Saint Regis 402 AM EDT Mon Sep 1 2025 .TODAY...Light and variable winds. Sunny through early afternoon, then becoming partly sunny. .TONIGHT...Northeast winds less than 10 knots. Mostly cloudy. .TUESDAY...Light and variable winds. A chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Light and variable winds. A chance of showers and thunderstorms in the evening. .WEDNESDAY...South winds 10 knots or less. Mainly clear. .THURSDAY...South winds 5 to 15 knots becoming southwest. Showers. .FRIDAY...Southwest winds 5 to 10 knots becoming south. Showers during the day, then a chance of showers Friday night. Winds and waves higher in and near thunderstorms. $$