Norwalk
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Norwalk, CT

The tourist attraction spot of a stone house home to the Sheffield Island lighthouse in Norwalk, Connecticut, overlooking the water out front
The tourist attraction spot of a stone house home to the Sheffield Island lighthouse in Norwalk, Connecticut, overlooking the water out front
January, the same as December, is a wintry winter month in Norwalk, Connecticut, with average temperature fluctuating between 35.8°F (2.1°C) and 26.4°F (-3.1°C). January is the coldest month, with an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 26.4°F (-3.1°C). Weather in January »

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

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

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

The last month of the spring, May, is a comfortable month in Norwalk, Connecticut, with average temperature fluctuating between 52.7°F (11.5°C) and 65.8°F (18.8°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 »

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

July, like June, in Norwalk, Connecticut, is a moderately hot summer month, with average temperature varying between 81.1°F (27.3°C) and 68.2°F (20.1°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 evaluated at 85.6°F (29.8°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Norwalk, Connecticut, with average temperature varying between 80.1°F (26.7°C) and 67.8°F (19.9°C). In Norwalk, Connecticut, the average high-temperature in August is almost the same as in July - a still moderately hot 80.1°F (26.7°C). Weather in August »

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

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

The last month of the autumn, November, is also a fresh month in Norwalk, Connecticut, with 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 drops, from an enjoyable 61.9°F (16.6°C) in October, to a fresh 50.9°F (10.5°C). Weather in November »

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

What is the coldest month in Norwalk?

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

How many days does it rain in Norwalk?

In Norwalk, during the entire year, the rain falls for 166.3 days and collects up to 37.87" (962mm) of precipitation.

What is the driest month in Norwalk?

January and February are months with the least rain when the rain falls for 8.3 days and typically aggregates up to 2.36" (60mm) of rain.

When does it snow in Norwalk?

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

How many days does it snow in Norwalk?

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

When is the lowest UV index in Norwalk?

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

What is the most humid month in Norwalk?

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

When does it snow the most in Norwalk?

The month with the most snowfall is February when snow falls for 7.4 days and typically aggregates up to 2.83" (72mm) of snow.

When is the ocean coldest in Norwalk?

The month with the coldest seawater in Norwalk, Connecticut, is February, 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.

What is the least humid month in Norwalk?

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

When it does not snow in Norwalk?

May through October are months without snowfall in Norwalk.

When are the longest days in Norwalk?

The month with the longest days in Norwalk is June, with an average of 15.1h of daylight.

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

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

What is the warmest month in Norwalk?

The warmest month in Norwalk, Connecticut, is July, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 68.2°F (20.1°C).

What is the wettest month in Norwalk?

The month with the most rainfall is July when the rain falls for 18.1 days and typically aggregates up to 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.

What is the month with the warmest ocean in Norwalk?

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

What is the month with the shortest days in Norwalk?

With an average of 9.3h of daylight, December has the shortest days of the year in Norwalk.
Average temperature - Norwalk, CT
Average humidity - Norwalk, CT
Average rainfall - Norwalk, CT

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

Average rainfall days - Norwalk, CT

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

Average snowfall - Norwalk, CT

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

Average snowfall days - Norwalk, CT

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

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).

Average daylight / Average sunshine - Norwalk, CT

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

The month with most sunshine is July (Average sunshine: 10.5h).
The month with least sunshine is February (Average sunshine: 4.7h).

Average UV index - Norwalk, CT