When planning a visit to Connecticut in the United States of America, it helps to know that temperatures typically range from 3°C (37°F) in February up to 27°C (81°F) during the peak of July. Our detailed climate overview is based on data from Mystic, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In Connecticut, the months of June, August and September bring pleasant weather, with average temperatures ranging between 23°C (73°F) and 26°C (79°F).
The coldest months are usually in January, February, March and December.
Precipitation in Connecticut shows some seasonal variation. You'll find the most rain in December (126 mm (5 in)), while August tends to be drier (89 mm (3.5 in)).
July is the sunniest period, with ideal conditions for exploring the region and all it has to offer.
