


Great Lakes Forecast
Issued by NWS
Issued by NWS
381 FZUS61 KBUF 300202 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Mon Sep 29 2025 SLZ022-024-300900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Mon Sep 29 2025 .OVERNIGHT...Southwest winds 10 knots or less becoming northwest. Clear. .TUESDAY...North winds 5 to 10 knots. Sunny. .TUESDAY NIGHT...North winds 5 to 10 knots becoming northeast. Mainly clear. .WEDNESDAY...North winds 5 to 10 knots becoming northeast. Sunny. .WEDNESDAY NIGHT...Northeast winds 10 knots or less. Mainly clear. .THURSDAY...East winds less than 10 knots. Partly cloudy. .FRIDAY...South winds 10 knots or less becoming southwest. Mainly clear. .SATURDAY...Southwest winds 10 knots or less. Mainly clear, then becoming partly cloudy. $$