Norwalk, CT Climate

Norwalk, CT has a humid continental climate with hot and humid summers and cold winters. Average temperatures in the summer can reach up to the mid-80s (Fahrenheit) with high humidity levels, while average temperatures in the winter can dip down into the 20s (Fahrenheit). Norwalk experiences light precipitation throughout the year, but is most concentrated in early fall and late spring. Snowfall is common during the winter months. Overall, Norwalk enjoys four distinct seasons, giving residents a wide range of weather to enjoy throughout the year.

Norwalk, Connecticut gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 179 sunny days per year in Norwalk. The US average is 205 sunny days.

Norwalk gets some kind of precipitation, on average, 123 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 84 degrees
Winter Low: the January low is 21
Rain: averages 50 inches of rain a year
Snow: averages 29 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Norwalk is 7.1 (10=best), which means it is more comfortable than most places in Connecticut.

8.9 Summer - 5.2 Winter

June, September and August are the most pleasant months in Norwalk, while January and February are the least comfortable months.

Climate	Norwalk, Connecticut	United States
	50.4 in.	38.1 in.
	29.0 in.	27.8 in.
	123.1 days	106.2 days
	179 days	205 days
	83.6°	85.8°
	21.0°	21.7°
	7.1	7
	3.4	4.3
	43 ft.	2443 ft.

Climate

YOU SHOULD KNOW

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 Norwalk with an average high temperature of 83.6°, which ranks it as warmer than most places in Connecticut. In Norwalk, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Norwalk are June, September and August.

In Norwalk, there are 9.0 days annually when the high temperature is over 90°, which is hotter than most places in Connecticut.

January has the coldest nighttime temperatures for Norwalk with an average of 21.0°. This is warmer than most places in Connecticut.

In Norwalk, there are 110.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.

In Norwalk, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Connecticut.

The humidity is usually comfortable in Norwalk 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 Norwalk with 4.6 inches of rain, and the driest month is February with 3.2 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 50.4 inches in Norwalk means that it is about average compared to other places in Connecticut.

April is the rainiest month in Norwalk with 12.2 days of rain, and October is the driest month with only 8.8 rainy days. There are 123.1 rainy days annually in Norwalk, which is rainier than most 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 29.0 inches in Norwalk means that it is less snowy than most places in Connecticut. February is the snowiest month in Norwalk with 8.5 inches of snow, and 6 months of the year have significant snowfall.