Except in the thick of winter, when inclement weather may make driving difficult, Connecticut is essentially a year-round destination. July averages in the mid-80s F/29 C, with some days in the 90s F/32-34 C. Humidity is occasionally high. Evening lows range from 56 F/12 C in the northwest to 63 F/17 C on the coast. The weather changes quickly. Expect clouds and precipitation to alternate with sunshine several times a week.
Travelers seeking fall foliage at its peak (around the second week of October) can call the state tourism bureau for information on which communities are getting the most brilliantly colored leaves. October is glorious and drier than most other times. Daytime temperatures in October run in the mid- to high 60s F/20 C, with nights dropping into the 40s F/4 C. Snow can fall any time December-March, and occasionally in April.