Norwalk (CT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Norwalk.
Climate overview of Norwalk
Norwalk, Connecticut, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in July, while winters cool to 4°C (39°F) in January.
Rain/snowfall is high, totalling around 1202 mm (47 in) per year. June is the wettest month and November the driest. The city also experiences warm summers and cold winters. The sunniest month is July, with 9.0 hours of sunshine per day on average.
Norwalk Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Norwalk - and find the best time to visit.
Monthly Temperature in Norwalk
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 (86°F) in July, the warmest time of the year, to a chilly 4°C (39°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in July to around -6°C (21°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Norwalk
Norwalk has a relatively rain/snowy climate with high precipitation levels, averaging 1202 mm (47 in) 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 (5 in), and the driest month, November, with 80 mm (3.1 in), is minimal. For more details, please visit our Norwalk Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Norwalk
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
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Norwalk by Month
The relative humidity is high throughout the year in Norwalk.
The city experiences its highest humidity in September, reaching 68%. In April, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Norwalk
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and September
- Warmest weather: July
- Most sunshine: May, June, July and August
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Norwalk
What is the best time to visit Norwalk?
May and September typically offer the most optimal weather in Norwalk. In contrast, January, February, March and December tend to have less optimal conditions. Norwalk has warm summers and cold winters.
What temperatures can I expect in Norwalk?
Daytime highs range from 4°C (39°F) in January to 30°C (86°F) in July. Nighttime lows range from -6°C (21°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Norwalk get?
Annual rainfall is around 1202 mm (47 in). June is the wettest month with 126 mm (5 in), while November is the driest with 80 mm (3.1 in).
How sunny is Norwalk?
Norwalk receives around 2,544 hours of sunshine per year. July is the sunniest month with 271 hours, while December is the cloudiest with just 141 hours. Overall, Norwalk enjoys abundant sunshine.
Norwalk 3-Day Forecast
Norwalk on the map
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Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
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