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
2/11
Wednesday
Moderate snow
38.5°F/24.6°F
2/12
Thursday
Sunny
37.2°F/20.2°F
2/13
Friday
Sunny
35.2°F/15.3°F
2/14
Saturday
Partly Cloudy
35.6°F/15.4°F
2/15
Sunday
Partly Cloudy
32.7°F/19.7°F
2/16
Monday
Partly Cloudy
37.7°F/20.1°F
2/17
Tuesday
Sunny
39.8°F/27.2°F
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