August weather forecast
Wilton, CT

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Weather in August

August, the last month of the summer in Wilton, is also a moderately hot month, with an average temperature ranging between min 66.7°F (19.3°C) and max 80.2°F (26.8°C).

Temperature

With the arrival of August, Wilton's average high-temperature registers at a still warm 80.2°F (26.8°C), indicating a subtle variation from the previous month. During August, Wilton sees a mean low-temperature of 66.7°F (19.3°C).

Humidity

In August, the average relative humidity in Wilton is 74%.

Rainfall

In Wilton, in August, it is raining for 16.8 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, there are 170.2 rainfall days, and 38.62" (981mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Wilton, the average length of the day in August is 13h and 46min.
On the first day of August, sunrise is at 5:50 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:27 pm EDT.

Sunshine

In Wilton, the average sunshine in August is 10.4h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 during August translates into the following guidance:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

August temperatures vary between a high-temperature of 80.2°F (26.8°C) and a low-temperature of 66.7°F (19.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in August?

In August, the average relative humidity is 74%.

How much does it rain in August?

In Wilton, during August, the rain falls for 16.8 days and regularly aggregates up to 3.5" (89mm) of precipitation.

When it does not snow in Wilton?

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

What is the average length of the day in August?

In Wilton, Connecticut, the average day length in August is 13h and 46min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 5:50 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:27 pm EDT.

How long on average sun shines in August in Wilton?

The average sunshine duration in August is 10.4h.

What is the month with the highest UV index?

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

How high is the UV index in August?

In Wilton, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Wilton, CT

Average temperature in August - Wilton, CT
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in August
Wilton, CT

Average pressure in August - Wilton, CT
  • Average pressure in August: 29.98"Hg

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

Average wind speed in August
Wilton, CT

Average wind speed in August - Wilton, CT
  • Average wind speed in August: 6.2mph

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).

Average humidity in August
Wilton, CT

Average humidity in August - Wilton, CT
  • Average humidity in August: 74%

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%).

Average rainfall in August
Wilton, CT

Average rainfall in August - Wilton, CT
  • Average rainfall in August: 3.5"

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

Average rainfall days in August
Wilton, CT

Average rainfall days in August - Wilton, CT
  • Average rainfall days in August: 16.8 days

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).

Average snowfall in August
Wilton, CT

Average snowfall in August - Wilton, CT
  • Average snowfall in August: 0"

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").

Average snowfall days in August
Wilton, CT

Average snowfall days in August - Wilton, CT
  • Average snowfall days in August: 0 days

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).

Average daylight in August /
Average sunshine in August
Wilton, CT

Average daylight in August / Average sunshine in August - Wilton, CT
  • Average daylight in August: 13h and 5min

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 18min).

  • Average sunshine in August: 10h and 2min

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).

Average sunshine days in August
Wilton, CT

Average sunshine days in August - Wilton, CT
  • Average sunshine days in August: 11.3 days

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

Average UV index in August
Wilton, CT

Average UV index in August - Wilton, CT
  • Average UV index in August: 6

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).

Average cloud cover in August
Wilton, CT

Average cloud cover in August - Wilton, CT
  • Average cloud cover in August: 30

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Wilton, CT

Average visibility in August - Wilton, CT
  • Average visibility in August: 6mi

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).

Wilton, Connecticut, USA

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