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Connecticut

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Connecticut Weather and climate

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
11/14
Friday
Sunny
9.9°C/1°C
11/15
Saturday
Sunny
6°C/-1.6°C
11/16
Sunday
Heavy rain
9.4°C/3.1°C
11/17
Monday
Sunny
6.9°C/2°C
11/18
Tuesday
Sunny
8.6°C/-0.3°C
11/19
Wednesday
Partly Cloudy
8.5°C/1.6°C
11/20
Thursday
Patchy rain nearby
7.7°C/0.2°C