Great Lakes Forecast
Issued by NWS
Issued by NWS
740 FZUS61 KBUF 300203 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 PM EDT Wed Apr 29 2026 SLZ022-024-300900- Saint Lawrence River from Cape Vincent to Saint Regis 1003 PM EDT Wed Apr 29 2026 .OVERNIGHT...North winds 5 to 10 knots becoming west. Rain. .THURSDAY...West winds 5 to 10 knots. Rain likely early, then a chance of showers late in the morning. A chance of showers late. .THURSDAY NIGHT...Northwest winds 10 knots or less. A chance of rain showers in the evening. .FRIDAY...Northwest winds 5 to 10 knots becoming west. A chance of rain showers in the afternoon. .FRIDAY NIGHT...Southwest winds 10 knots or less. A chance of rain showers in the evening. .SATURDAY...West winds 5 to 15 knots becoming southwest less than 10 knots. A chance of rain showers during the day. .SUNDAY...Southwest winds 5 to 15 knots. Partly to mostly cloudy. .MONDAY...Southwest winds 5 to 10 knots becoming south. Rain showers likely. $$