Climate

Spring (March-May)

Average temperatures:
Low: 38. 1° F / 3.39° C
High: 59.8° F / 15.44° C

Average rainfall/precipitation:
4.04 in. / 10.26 cm.

What to expect:
Spring in Connecticut is unpredictable. There is often snow or frost on the ground into March, but when the spring warmth does arrive, you’ll want to pack clothes that are good for layering.

Summer (June-August)

Average temperatures:
Low: 60° F / 15.6° C
High: 82.5° F / 28.1° C

Average rainfall/precipitation:
3.83 in. / 9.72 cm.

What to expect:
Expect warm temperatures, high humidity levels and mostly sunny days. 

Fall (September-November)

Average temperatures:
Low: 41.8° F / 5.4° C
High: 62.7° F / 17.1° C

Average rainfall/precipitation: 
4.04 in. / 10.26 cm.

What to expect:
The fall brings clear days perfect for viewing the gorgeous changing foliage. But the sun goes down sooner and temperatures follow. There can be an unexpected snow storm late in the fall, so be prepared. 

Winter (December-February)

Average temperatures:
Low: 19.9° F / -6.7° C
High: 36.9° F / 2.7° C

Average rain or snowfall/precipitation:
25.6 in. / 65.02 cm.

What to expect:
Expect cold temperatures throughout the day, with possibilities of snow, which could get deep at times. You will need warm clothes, sweaters, heavy jackets, scarves, gloves and boots or snow boots. OISS has some useful information to prepare you for your first winter in New England.