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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 5.9–17.0°C, 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 21.3–25.2°C, 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 19.0–7.7°C, 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 2.7–0.5°C, 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. 12°C / Annual rainfall: approx. 1344 mm / Summer humidity: 65%–75% / Rainiest month: July

Connecticut monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
0.5°C
136
February
1.7°C
69.3
March
5.9°C
130
April
11.2°C
130.7
May
17°C
76.7
June
21.3°C
56.7
July
25.2°C
181.3
August
23.3°C
117
September
19°C
160
October
13.3°C
72.3
November
7.7°C
72.3
December
2.7°C
142

Connecticut weather for the next seven days

12/20
Saturday
Partly Cloudy
3.3°C/-1°C
12/21
Sunday
Overcast
7.8°C/-1.7°C
12/22
Monday
Sunny
-0.9°C/-7°C
12/23
Tuesday
Heavy snow
1°C/-3.3°C
12/24
Wednesday
Partly Cloudy
3.8°C/-1.6°C
12/25
Thursday
Light drizzle
2.3°C/-1.9°C
12/26
Friday
Patchy rain nearby
12.3°C/2.1°C

Connecticut Frequently Asked Questions and Useful Information for Travel

What are the most popular attractions in Connecticut?

While there isn't one single 'number one' attraction, the Mystic Seaport Museum and the Mystic Aquarium are consistently top-ranked for their maritime and marine life experiences. Other major draws include Foxwoods Resort Casino, the Mark Twain House & Museum, and historical sites like Fort Trumbull State Park and Gillette Castle State Park.

Why do tourists visit Connecticut?

Connecticut attracts tourists with its beautiful open land and scenery, charming Colonial villages filled with historic homes and landmarks. Visitors can enjoy numerous golf courses, and abundant opportunities for boating, fishing, and swimming.

What are the most picturesque locations in Connecticut?

Some of Connecticut's most beautiful places include the charming coastal town of Mystic, the natural beauty of Silver Sands State Park, Gillette Castle State Park with its unique architecture, and the picturesque town and state forest of Barkhamsted. The Yale University campus in New Haven and Kent Falls State Park also offer stunning views.

Is Connecticut a recommended state for visitors?

Yes, Connecticut is highly recommended for visitors, offering a blend of New England charm, natural beauty, and rich history. Its compact size makes it easy to explore many attractions, from scenic drives and historic small towns to coastal activities and culturally significant sites.

What are some must-see historical sites in Connecticut?

Connecticut boasts numerous historical sites, including the Mark Twain House & Museum in Hartford, the Mark Twain Library, and the historic charm of its many Colonial-era villages. Fort Trumbull State Park and Gillette Castle State Park also offer significant historical insights and unique architectural experiences.