About Cos Cob, CT

With a population of around 6,800, Cos Cob sits in Connecticut, United States. The city operates in the Eastern Time Zone.

Cos Cob has a humid continental climate. Average annual temperature is 54°F, with January lows around 25°F and July highs near 83°F. The city averages 38 inches of precipitation per year. The wettest month is typically September; the driest is February.