Great Lakes Forecast
Issued by NWS
Issued by NWS
037 FZUS61 KBUF 050811 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 411 AM EDT Sun Apr 5 2026 SLZ022-024-051500- Saint Lawrence River from Cape Vincent to Saint Regis 411 AM EDT Sun Apr 5 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Showers early, then a chance of showers from late morning on. .TONIGHT...West winds 15 to 20 knots diminishing to 5 to 15 knots. A chance of rain showers early, then a chance of rain and snow showers. A chance of snow showers late. .MONDAY...West winds 5 to 10 knots. A chance of snow showers in the morning. .MONDAY NIGHT...West winds 10 knots or less becoming north. A chance of rain and snow showers in the evening, then snow showers likely overnight. .TUESDAY...North winds 5 to 15 knots becoming southwest less than 10 knots. A chance of snow showers during the day. .WEDNESDAY...Southwest winds 5 to 15 knots becoming south 15 to 20 knots. Mainly clear, then becoming mostly cloudy. .THURSDAY...South winds 15 to 25 knots becoming southwest. A chance of rain showers. $$