August weather forecast
Colchester, CT

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Weather in August

August, the last month of the summer in Colchester, is another warm month, with an average temperature ranging between max 80.2°F (26.8°C) and min 63°F (17.2°C).

Temperature

Transitioning into August, Colchester experiences an average high-temperature of a still moderately hot 80.2°F (26.8°C), marking a minor shift from the preceding month. During August, Colchester sees a mean low-temperature of 63°F (17.2°C).

Humidity

The average relative humidity in August is 77%.

Rainfall

In Colchester, in August, it is raining for 11.2 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 99.9 rainfall days, and 9.41" (239mm) of precipitation is accumulated.

Snowfall

In Colchester, snow does not fall in June through October.

Daylight

In August, the average length of the day in Colchester is 13h and 48min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:06 pm. On the last day of August, in Colchester, sunrise is at 6:15 am and sunset at 7:23 pm EDT.

Sunshine

The month with the most sunshine is August, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index in Colchester 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 exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the temperature in August in Colchester?

In Colchester, 80.2°F (26.8°C) is the average high-temperature and 63°F (17.2°C) is the average low-temperature during August. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in July is estimated at 87.8°F (31°C).

What is the average humidity in August in Colchester?

The average relative humidity in August in Colchester, Connecticut, is 77%.

How many days does it rain in August in Colchester?

In Colchester, in August, it is raining for 11.2 days, with typically 0.87" (22mm) of accumulated precipitation.

When it does not snow in Colchester?

June through October are months without snowfall in Colchester.

What is the average length of the day in August in Colchester?

In August, the average day length in Colchester is 13h and 48min.

When is the sunrise / sunset in August in Colchester?

In August, on the first day of the month, sunrise is at 5:44 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:23 pm EDT.

What month has the most sunshine in Colchester?

August has the most sunshine of the year, with an average of 10.3h of sunshine.

How long on average sun shines in August in Colchester?

In August, the average sunshine duration in Colchester, Connecticut, is 10.3h.

When is the highest UV index in Colchester?

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

How high is the UV index in August in Colchester?

The average daily maximum UV index in August in Colchester, Connecticut, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from 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
Colchester, CT

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

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in August: 63°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure in August
Colchester, CT

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

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Colchester, CT

Average wind speed in August - Colchester, CT
  • Average wind speed in August: 5.6mph

The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in August
Colchester, CT

Average humidity in August - Colchester, CT
  • Average humidity in August: 77%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in August
Colchester, CT

Average rainfall in August - Colchester, CT
  • Average rainfall in August: 0.87"

The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days in August
Colchester, CT

Average rainfall days in August - Colchester, CT
  • Average rainfall days in August: 11.2 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).

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Average snowfall in August
Colchester, CT

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

The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Colchester, CT

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

The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Colchester, 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 12min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days in August
Colchester, CT

Average sunshine days in August - Colchester, CT
  • Average sunshine days in August: 17.8 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).

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Average UV index in August
Colchester, CT

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Colchester, CT

Average cloud cover in August - Colchester, CT
  • Average cloud cover in August: 34

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in August
Colchester, CT

Average visibility in August - Colchester, CT
  • Average visibility in August: 5mi

The months with the highest visibility are January, March, April, September, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and August (5mi).

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Colchester, Connecticut, USA

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