Spring (March–May): Average 43–61°F, mild but with possible showers; March and April are rainier. Typical activities: Outdoor walks, flower viewing. Suggested clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 70–78°F, warm and humid with occasional thunderstorms. July is the rainier month. Typical activities: Picnics, outdoor sports, museum visits. Suggested clothing: Light and breathable clothing, sun hat, sunglasses.
Autumn (September–November): Average 48–68°F, pleasant and cool and dry, with decreasing rainfall. Typical activities: Outdoor activities, fall foliage viewing (if applicable). Suggested clothing: Comfortable long-sleeved shirts, light jacket.
Winter (December–February): Average 36–39°F, cold and humid with more rainfall, especially in December. Typical activities: Indoor activities, museum visits, enjoying hot drinks. Suggested clothing: Warm coat, scarf, hat, gloves.
New Haven climatological average
Annual average temperature: approx. 55.4°F / Annual rainfall: approx. 1165 mm / Summer humidity: 65%–75% / Rainiest month: December
New Haven monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
36.1°F
120.3
February
37°F
55.7
March
43.9°F
141.3
April
52.2°F
84.7
May
61.7°F
78.7
June
70.3°F
68.7
July
78.1°F
130
August
75.6°F
86.3
September
68.5°F
118.7
October
58.5°F
57.3
November
48.7°F
72.3
December
39.7°F
151.7
New Haven weather for the next seven days
3/15
Sunday
Sunny
46.6°F/31.8°F
3/16
Monday
Heavy rain
54.9°F/39.7°F
3/17
Tuesday
Heavy rain
38.7°F/30.2°F
3/18
Wednesday
Overcast
32°F/23°F
3/19
Thursday
Partly Cloudy
38.4°F/30.7°F
3/20
Friday
Patchy rain nearby
50.6°F/33.1°F
3/21
Saturday
Patchy rain nearby
43.8°F/32.8°F
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