CAPE COD IN SEPTEMBER (Free Cape Cod News) – In most years Cape Cod averages a daily maximum temperatures for September that’s between 70º and 75º degrees. The minimum temperature usually falls bent 55º and 69º F.
What to wear in September?
September starts to become more fall-like so you will need to bring some summer clothes as well as clothes for colder fall days.
Cape Cod, Massachusetts 5 Day Weather Forecast: