New Haven, Connecticut 

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Climate in New Haven, Connecticut

New Haven experiences a humid subtropical climate with four distinct seasons. Summers are hot and humid, while winters are cold with occasional snowfall. Spring and fall bring moderate temperatures and pleasant weather conditions. The city is also prone to coastal storms such as nor'easters that can bring heavy rain, strong winds, and coastal flooding.

New Haven, Connecticut gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

New Haven averages 29 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in New Haven. The US average is 205 sunny days.

New Haven gets some kind of precipitation, on average, 108 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 83 degrees
Winter Low: the January low is 21
Rain: averages 48 inches of rain a year
Snow: averages 29 inches of snow a year


The annual BestPlaces Comfort Index for New Haven is 7.2 (10=best), which means it is one of the most pleasant places in Connecticut.

9 / 5.3

Summer   /   Winter
June, September and August are the most pleasant months in New Haven, while January and February are the least comfortable months.

Climate Averages
  New Haven, ConnecticutUnited States
  48.1 in.38.1 in.
  29.1 in.27.8 in.
  107.7 days106.2 days
  204 days205 days
  39 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for New Haven with an average high temperature of 83.4°, which ranks it as warmer than most places in Connecticut. In New Haven, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for New Haven are June, September and August.

In New Haven, there are 7.6 days annually when the high temperature is over 90°, which is about average compared to other places in Connecticut.

January has the coldest nighttime temperatures for New Haven with an average of 20.5°. This is warmer than most places in Connecticut.

In New Haven, there are 112.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

In New Haven, there are 1.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Connecticut.

The humidity is usually comfortable in New Haven but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

April is the wettest month in New Haven with 4.5 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 48.1 inches in New Haven means that it is drier than most places in Connecticut.

May is the rainiest month in New Haven with 10.7 days of rain, and August is the driest month with only 7.8 rainy days. There are 107.7 rainy days annually in New Haven, which is one of the least rainy places in Connecticut. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 29.1 inches in New Haven means that it is less snowy than most places in Connecticut. January is the snowiest month in New Haven with 8.4 inches of snow, and 6 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for New Haven    5 Reviews
    College - 3/29/2013
    In the greater New Haven area there are many options for a college... Read More

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    Crime - 6/20/2009
    I am thinking of relocating to New Haven, Ct. but am concerned about the high crime rating. Any thoughts?... Read More

    Great place to live! - 3/3/2008
    Due to New Haven, CT great location between New York and Boston, educational opportunities, cultural and recreational activities on Long Island Sound and relatively mild... Read More

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