Climate and monthly weather forecast
Norwalk, CT

The tourist attraction spot of a stone house home to the Sheffield Island lighthouse in Norwalk, Connecticut
The tourist attraction spot of a stone house home to the Sheffield Island lighthouse in Norwalk, Connecticut

Weather in January

January, the same as December, is another cold winter month in Norwalk, Connecticut, with an average temperature ranging between max 35.8°F (2.1°C) and min 26.4°F (-3.1°C). With an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 26.4°F (-3.1°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Norwalk, is another cold month, with an average temperature ranging between max 38.1°F (3.4°C) and min 27.3°F (-2.6°C). In February, the average high-temperature is essentially the same as in January - a still cold 38.1°F (3.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Norwalk, Connecticut, with an average temperature fluctuating between 44.4°F (6.9°C) and 33.4°F (0.8°C). In Norwalk, the average high-temperature in March marginally rises from a wintry 38.1°F (3.4°C) in February to a chilly 44.4°F (6.9°C). Weather in March »

Weather in April

April in Norwalk, Connecticut, is a fresh spring month, with an average temperature fluctuating between 43°F (6.1°C) and 55.2°F (12.9°C). In Norwalk, the average high-temperature in April increases from a chilly 44.4°F (6.9°C) in March to a fresh 55.2°F (12.9°C). Weather in April »

Weather in May

May, the last month of the spring in Norwalk, is an enjoyable month, with an average temperature ranging between max 65.8°F (18.8°C) and min 52.7°F (11.5°C). In May, the average high-temperature rises from a fresh 55.2°F (12.9°C) in April to an enjoyable 65.8°F (18.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Norwalk, Connecticut, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 61°F (16.1°C). In Norwalk, the average high-temperature in June slightly increases from a comfortable 65.8°F (18.8°C) in May to a warm 74.1°F (23.4°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Norwalk, Connecticut, with an average temperature ranging between min 68.2°F (20.1°C) and max 81.1°F (27.3°C). July is the warmest month, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 68.2°F (20.1°C). In July, the average heat index is computed to be 85.6°F (29.8°C). Weather in July »

Weather in August

August, the last month of the summer in Norwalk, is also a moderately hot month, with temperature in the range of an average low of 67.8°F (19.9°C) and an average high of 80.1°F (26.7°C). In Norwalk, the average high-temperature in August is practically the same as in July - a still warm 80.1°F (26.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Norwalk, Connecticut, with an average temperature fluctuating between 73°F (22.8°C) and 61.2°F (16.2°C). In Norwalk, the average high-temperature in September marginally drops from a moderately hot 80.1°F (26.7°C) in August to a pleasant 73°F (22.8°C). Weather in September »

Weather in October

October, like September, in Norwalk, Connecticut, is another enjoyable autumn month, with an average temperature fluctuating between 51.3°F (10.7°C) and 61.9°F (16.6°C). In October, the average high-temperature drops from an agreeable 73°F (22.8°C) in September to a comfortable 61.9°F (16.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Norwalk, Connecticut, with an average temperature ranging between min 40.3°F (4.6°C) and max 50.9°F (10.5°C). In November, the average high-temperature decreases from a comfortable 61.9°F (16.6°C) in October to a fresh 50.9°F (10.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Norwalk, Connecticut, with an average temperature fluctuating between 32.9°F (0.5°C) and 41.9°F (5.5°C). In December, the average high-temperature drops from a fresh 50.9°F (10.5°C) in November to a cold 41.9°F (5.5°C). Weather in December »
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FAQ

What is the coldest month in Norwalk?

January is the coldest month in Norwalk, with an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 26.4°F (-3.1°C).

What is the driest month in Norwalk?

The months with the least rainfall in Norwalk, Connecticut, are January and February Rain falls for 8.3 days and accumulates 2.36" (60mm) of rain.

How many days does it rain in Norwalk?

Throughout the year, there are 166.3 rainfall days, and 37.87" (962mm) of precipitation is accumulated.

When does it snow in Norwalk?

Months with snowfall in Norwalk are January through April, November and December.

How much does it snow in Norwalk?

In Norwalk, Connecticut, during the entire year, snow falls for 24.6 days and aggregates up to 9.61" (244mm) of snow.

What are the months with the lowest UV index in Norwalk?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What are the most humid months in Norwalk?

February, May and June, with an average relative humidity of 76%, are most humid months in Norwalk.

When does it snow the most in Norwalk?

February is the month with the most snowfall in Norwalk, Connecticut. Snow falls for 7.4 days and accumulates 2.83" (72mm) of snow.

What is the month with the coldest ocean in Norwalk?

February is the month with the coldest seawater in Norwalk, with an average ocean temperature of 39°F (3.9°C).

What is the month with the least sunshine in Norwalk?

With an average of 4.7h of sunshine, February has the least sunshine of the year in Norwalk, Connecticut.

When is Daylight Saving Time (DST) in Norwalk?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Norwalk, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What are the least humid months in Norwalk?

The months with the lowest humidity are April and November, with an average relative humidity of 72%.

When it does not snow in Norwalk?

May through October are months without snowfall.

When are the longest days in Norwalk?

With an average of 15h and 5min of daylight, June has the longest days of the year.

What is the month with the highest UV index in Norwalk?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the warmest month in Norwalk?

With an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 68.2°F (20.1°C), July is the warmest month.

What is the rainiest month in Norwalk?

July is the month with the most rainfall in Norwalk. Rain falls for 18.1 days and accumulates 4.13" (105mm) of precipitation.

What month has the most sunshine in Norwalk?

With an average of 10.5h of sunshine, July has the most sunshine of the year in Norwalk, Connecticut.

When is the ocean warmest in Norwalk?

With an average ocean temperature of 73°F (22.8°C), August is the month with the warmest seawater.

What is the month with the shortest days in Norwalk?

With an average of 9h and 16min of daylight, December has the shortest days of the year in Norwalk, Connecticut.

Average temperature
Norwalk, CT

Average temperature - Norwalk, CT

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.8°F).

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

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Average pressure
Norwalk, CT

Average pressure - Norwalk, CT

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Norwalk, CT

Average wind speed - Norwalk, CT

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity
Norwalk, CT

Average humidity - Norwalk, CT

The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).

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Average rainfall
Norwalk, CT

Average rainfall - Norwalk, CT

The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.36").

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Average rainfall days
Norwalk, CT

Average rainfall days - Norwalk, CT

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall
Norwalk, CT

Average snowfall - Norwalk, CT

The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Norwalk, CT

Average snowfall days - Norwalk, CT

The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature
Norwalk, CT

Average sea temperature - Norwalk, CT

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (39°F).

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Average daylight / Average sunshine
Norwalk, CT

Average daylight / Average sunshine - Norwalk, CT

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 16min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days
Norwalk, CT

Average sunshine days - Norwalk, CT

The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is June (10 days).

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Average UV index
Norwalk, CT

Average UV index - Norwalk, CT

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Norwalk, CT

Average visibility - Norwalk, CT

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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