


Great Lakes Forecast
Issued by NWS
Issued by NWS
493 FZUS61 KBUF 300202 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Tue Jul 29 2025 SLZ022-024-300900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Tue Jul 29 2025 .REST OF TONIGHT...West winds 10 knots or less becoming southwest. Mainly clear late this evening, then becoming partly cloudy. .WEDNESDAY...West winds 10 knots or less becoming northwest. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...North winds 10 knots or less. A chance of showers and thunderstorms in the evening. .THURSDAY...Northeast winds 5 to 10 knots. Mostly cloudy in the morning, then becoming partly sunny. .THURSDAY NIGHT...Northeast winds 10 knots or less. Becoming mainly clear. .FRIDAY...Northeast winds 5 to 10 knots becoming light and variable. Mainly clear. .SATURDAY...West winds 10 knots or less becoming southwest. Mainly clear. .SUNDAY...Southwest winds 10 knots or less. Mainly clear. Winds and waves higher in and near thunderstorms. $$