Climate and monthly weather forecast
Wilton, CT

Weather in January

January, like December, in Wilton, Connecticut, is a wintry winter month, with an average temperature ranging between max 35.1°F (1.7°C) and min 25°F (-3.9°C). With an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 25°F (-3.9°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Wilton, Connecticut, with an average temperature ranging between min 26.1°F (-3.3°C) and max 37.6°F (3.1°C). In Wilton, the average high-temperature in February is relatively the same as in January - a still wintry 37.6°F (3.1°C). Weather in February »

Weather in March

March, the first month of the spring in Wilton, is a chilly month, with an average temperature varying between 32.9°F (0.5°C) and 44.2°F (6.8°C). In March, the average high-temperature marginally rises from a wintry 37.6°F (3.1°C) in February to a chilly 44.2°F (6.8°C). Weather in March »

Weather in April

April in Wilton, Connecticut, is a cool spring month, with an average temperature ranging between max 55.2°F (12.9°C) and min 42.3°F (5.7°C). In April, the average high-temperature rises from a frosty 44.2°F (6.8°C) in March to a cool 55.2°F (12.9°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Wilton, Connecticut, with an average temperature varying between 66°F (18.9°C) and 51.8°F (11°C). In May, the average high-temperature rises from a cool 55.2°F (12.9°C) in April to a comfortable 66°F (18.9°C). Weather in May »

Weather in June

June, the first month of the summer in Wilton, is a warm month, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 74.5°F (23.6°C). In June, the average high-temperature marginally rises from a comfortable 66°F (18.9°C) in May to a warm 74.5°F (23.6°C). Weather in June »

Weather in July

July, like June, in Wilton, Connecticut, is another warm summer month, with an average temperature fluctuating between 81.7°F (27.6°C) and 67.6°F (19.8°C). With an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 67.6°F (19.8°C), July is the warmest month. The average heat index in July is calculated to be a tropical 86°F (30°C). Weather in July »

Weather in August

August, the last month of the summer in Wilton, is also a moderately hot month, with an average temperature ranging between max 80.2°F (26.8°C) and min 66.7°F (19.3°C). In Wilton, the average high-temperature in August is relatively the same as in July - a still warm 80.2°F (26.8°C). Weather in August »

Weather in September

September, the first month of the autumn in Wilton, is also an agreeable month, with an average temperature fluctuating between 72.9°F (22.7°C) and 60.1°F (15.6°C). In Wilton, the average high-temperature in September slightly decreases from a moderately hot 80.2°F (26.8°C) in August to a pleasant 72.9°F (22.7°C). Weather in September »

Weather in October

October, like September, in Wilton, Connecticut, is another enjoyable autumn month, with an average temperature ranging between max 61.7°F (16.5°C) and min 50.7°F (10.4°C). In October, the average high-temperature decreases from an agreeable 72.9°F (22.7°C) in September to an enjoyable 61.7°F (16.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Wilton, Connecticut, with an average temperature varying between 50°F (10°C) and 39.7°F (4.3°C). In Wilton, the average high-temperature in November decreases from an enjoyable 61.7°F (16.5°C) in October to a cool 50°F (10°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Wilton, Connecticut, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 40.8°F (4.9°C). In December, the average high-temperature decreases from a cool 50°F (10°C) in November to a wintry 40.8°F (4.9°C). Weather in December »
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FAQ

What is the coldest month in Wilton?

January is the coldest month in Wilton, Connecticut, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 25°F (-3.9°C).

What is the driest month in Wilton?

January is the month with the least rainfall in Wilton. Rain falls for 8.6 days and accumulates 2.44" (62mm) of precipitation.

How much does it rain in Wilton?

In Wilton, Connecticut, during the entire year, the rain falls for 170.2 days and collects up to 38.62" (981mm) of precipitation.

When does it snow in Wilton?

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

How much does it snow in Wilton?

In Wilton, Connecticut, during the entire year, snow falls for 28.5 days and aggregates up to 11.65" (296mm) of snow.

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

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

What is the most humid month in Wilton?

The months with the highest humidity in Wilton, Connecticut, are February, May, June, October and December, with an average relative humidity of 76%.

What is the snowiest month in Wilton?

The month with the most snowfall in Wilton, Connecticut, is February, when snow falls for 8.3 days and typically aggregates up to 3.46" (88mm) of snow.

What is the month with the least sunshine in Wilton?

February has the least sunshine of the year, with an average of 4.7h of sunshine.

When is Daylight Saving Time (DST) in Wilton?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Wilton?

With an average relative humidity of 72%, April is the least humid month in Wilton, Connecticut.

When it does not snow in Wilton?

In Wilton, Connecticut, snow does not fall in May through October.

When are the longest days in Wilton?

June has the longest days of the year, with an average of 15h and 6min of daylight.

What are the months with the highest UV index in Wilton?

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

What is the warmest month in Wilton?

The warmest month in Wilton is July, with an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 67.6°F (19.8°C).

What month has the most sunshine in Wilton?

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

What is the wettest month in Wilton?

The month with the most rainfall in Wilton, Connecticut, is December, when the rain falls for 12.3 days and typically aggregates up to 4.17" (106mm) of precipitation.

What is the month with the shortest days in Wilton?

December has the shortest days of the year in Wilton, with an average of 9h and 16min of daylight.

Average pressure
Wilton, CT

Average pressure - Wilton, 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
Wilton, CT

Average wind speed - Wilton, CT

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average humidity
Wilton, CT

Average humidity - Wilton, CT

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

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Average rainfall
Wilton, CT

Average rainfall - Wilton, CT

The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is January (2.44").

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Average rainfall days
Wilton, CT

Average rainfall days - Wilton, CT

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall
Wilton, CT

Average snowfall - Wilton, CT

The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Wilton, CT

Average snowfall days - Wilton, CT

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Wilton, CT

Average daylight / Average sunshine - Wilton, CT

The month with the longest days is June (Average daylight: 15h and 6min).
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
Wilton, CT

Average sunshine days - Wilton, CT

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index
Wilton, CT

Average UV index - Wilton, 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
Wilton, CT

Average visibility - Wilton, 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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