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Forecast for the Saint Lawrence River
including the Thousand Islands Region
National Weather Service Buffalo NY
403 AM EDT Sun Aug 30 2026

SLZ022-024-301500-
Saint Lawrence River from Cape Vincent to Saint Regis
403 AM EDT Sun Aug 30 2026

.TODAY...Southwest winds 5 to 10 knots. Showers likely this
morning, then a chance of showers early this afternoon. Showers
likely late.
.TONIGHT...Southwest winds 5 to 10 knots becoming light and
variable. Showers likely early. Patchy fog late.
.MONDAY...Light and variable winds. Patchy fog in the morning. A
chance of showers in the afternoon.
.MONDAY NIGHT...Light and variable winds. Showers likely in the
evening, then showers overnight.
.TUESDAY...Northeast winds 10 knots or less becoming east.
Showers during the day, then a chance of showers Tuesday night.
.WEDNESDAY...Southeast winds 10 knots or less becoming south.
Showers likely.
.THURSDAY...Southwest winds less than 10 knots. A chance of
showers.

$$