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Connecticut

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Connecticut Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Connecticut year round climate

  • Spring (March–May): Average 42–62°F, mild climate, but often overcast and rainy, with March and April being the most humid. Common activities: Outdoor excursions, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 70–77°F, hot and humid, with more rainfall, especially in July. Common activities: Swimming, camping, picnicking. Recommended clothing: Light and breathable clothing, sun hat.
  • Autumn (September–November): Average 66–45°F, pleasant climate, but with larger temperature fluctuations, gradually transitioning from warm to cool. Common activities: Leaf peeping, hiking. Recommended clothing: Jacket, long-sleeved shirt, adjust clothing according to temperature changes.
  • Winter (December–February): Average 36–32°F, cold, moderate snowfall, with ice and snow in some areas. Common activities: Skiing, ice skating. Recommended clothing: Thick coat, warm clothing, hat, gloves, scarf.

Connecticut climatological average

Annual average temperature: approx. 53.6°F / Annual rainfall: approx. 1344 mm / Summer humidity: 65%–75% / Rainiest month: July

Connecticut monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
32.9°F
136
February
35.1°F
69.3
March
42.6°F
130
April
52.2°F
130.7
May
62.6°F
76.7
June
70.3°F
56.7
July
77.4°F
181.3
August
73.9°F
117
September
66.2°F
160
October
55.9°F
72.3
November
45.9°F
72.3
December
36.9°F
142

Connecticut weather for the next seven days

9/28
Monday
Light rain shower
55.5°F/52.7°F
9/29
Tuesday
Overcast
69.7°F/51.9°F
9/30
Wednesday
Overcast
73.7°F/56.7°F
10/1
Thursday
Overcast
79.7°F/61.4°F
10/2
Friday
Overcast
85.3°F/56.6°F
10/3
Saturday
Overcast
62.5°F/48.5°F
10/4
Sunday
Overcast
62.9°F/44.5°F