


Great Lakes Forecast
Issued by NWS
Issued by NWS
190 FZUS61 KBUF 162002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Tue Sep 16 2025 SLZ022-024-170300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Tue Sep 16 2025 .TONIGHT...Northeast winds less than 10 knots. Patchy fog after midnight. .WEDNESDAY...Light and variable winds. Patchy fog early. .WEDNESDAY NIGHT...Southwest winds less than 10 knots. Mostly cloudy. .THURSDAY...Southwest winds 10 knots or less becoming west. Mostly sunny. .THURSDAY NIGHT...West winds 10 knots or less becoming north. A chance of showers. .FRIDAY...North winds 10 knots or less. Mainly clear. .SATURDAY...Northeast winds 10 knots or less becoming southeast. Mainly clear. .SUNDAY...South winds 5 to 10 knots. Partly to mostly cloudy. $$