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Norwalk (CT) Weather and Climate: A Comprehensive Guide

The temperature in Norwalk can vary greatly throughout the year. The temperatures shift from warm to cold. It also has a notably wet climate with much precipitation. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

Depending on the time of the year, temperatures range from comfortable to chilly in Norwalk. Average maximum daytime temperatures range from a comfortable 30°C in July, the warmest time of the year, to a chilly 4°C during cooler months like February.

At night, temperatures typically drop to an average of around -6°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Norwalk has a relatively rain/snowy climate with high precipitation levels, averaging 1202 mm of rain/snowfall annually. Year-round, Norwalk has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 126 mm, and the driest month, November, with 80 mm, is minimal.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Norwalk. While July receives considerable daily sunshine with up to 9.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.7 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: New York City, the United States of America (56 KM, 35 Miles).

Daily hours of sunshine

Data from: New York City, the United States of America (56 KM, 35 Miles).

Forecast for Norwalk (CT)

Sun   Dec 22
-4°C | -11°C
NW 5 m/s
clear and no rain

clear and no rain

Mon   Dec 23
-1°C | -13°C
SW 2 m/s
almost clear and no rain

almost clear and no rain

Tue   Dec 24
4°C | -4°C
W 2 m/s
1.9 mm
broken clouds and snow

broken clouds and snow

The best time of year to visit Norwalk in the United States of America

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Norwalk?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Norwalk?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Norwalk?
    The coldest month is February with an average maximum temperature of 4°C.
  • Which is the wettest month in Norwalk?
    June tops the wettest month list with 126 mm of rainfall.
  • Which is the driest month in Norwalk?
    November is the driest month with 80 mm of precipitation.
  • Which is the sunniest month in Norwalk?
    July is the sunniest month with an average of 271 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.