August weather forecast
Manchester, CT

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Weather in August

In August, the weather in Manchester is marked with a subtle shift towards cooler temperatures. The sky gets marginally cloudier than the previous month, thereby reducing the intensity of the heat. The frequency and intensity of thunderstorms dwindle, leading to pleasant weather overall. Towards the end of the month, the city begins to experience early signs of the upcoming fall season. The average high temperature dips slightly to 81°F (27.2°C), providing relief from July’s peak summer heat.

Temperature

As August takes hold, the average high-temperature is a still moderately hot 81°F (27.2°C), nearly mirroring that of the previous month. Manchester, in the month of August, anticipates a consistent average low-temperature of 62.2°F (16.8°C).

Heat index

The heat index value for August is calculated to be a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In Manchester, the average relative humidity in August is 75%.

Rainfall

In Manchester, Connecticut, during August, the rain falls for 16.7 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Manchester, during the entire year, the rain falls for 164.8 days and collects up to 31.77" (807mm) of precipitation.

Snowfall

In Manchester, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 49min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:07 pm. On the last day of August, sunrise is at 6:15 am and sunset at 7:24 pm EDT.

Sunshine

The months with the most sunshine in Manchester are July and August, with an average of 10.4h of sunshine.

UV index

In Manchester, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 5 in August translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. To protect against the Sun's most potent rays, avoid direct exposure around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What are August temperatures in Manchester?

Manchester in August has an average high-temperature of 81°F (27.2°C) and an average low-temperature of 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in August in Manchester?

In August, the average relative humidity in Manchester, Connecticut, is 75%.

How many days does it rain in August in Manchester?

In Manchester, in August, during 16.7 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

When it does not snow in Manchester?

In Manchester, Connecticut, snow does not fall in June through September.

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

The average day length in August in Manchester, Connecticut, is 13h and 49min.

What time are sunrise and sunset in August in Manchester?

On the first day of August in Manchester, Connecticut, sunrise is at 5:44 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:24 pm EDT.

What are the months with the most sunshine in Manchester?

July and August, with an average of 10.4h of sunshine, are months with the most sunshine in Manchester, Connecticut.

How many hours of sunshine does Manchester have in August?

In August, the average sunshine duration in Manchester is 10.4h.

What is the UV index intensity in August in Manchester?

The average daily maximum UV index in August in Manchester is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Manchester, CT

Average temperature in August - Manchester, CT
  • Average high temperature in August: 81°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in August
Manchester, CT

Average pressure in August - Manchester, 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).

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Average wind speed in August
Manchester, CT

Average wind speed in August - Manchester, CT
  • Average wind speed in August: 5.2mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in August
Manchester, CT

Average humidity in August - Manchester, CT
  • Average humidity in August: 75%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in August
Manchester, CT

Average rainfall in August - Manchester, CT
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in August
Manchester, CT

Average rainfall days in August - Manchester, CT
  • Average rainfall days in August: 16.7 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (10 days).

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Average snowfall in August
Manchester, CT

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

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Manchester, CT

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

The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 10h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Manchester, CT

Average sunshine days in August - Manchester, CT
  • Average sunshine days in August: 12 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in August
Manchester, CT

Average UV index in August - Manchester, CT
  • Average UV index in August: 5

The months with the highest UV index are June and July (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 cloud cover in August
Manchester, CT

Average cloud cover in August - Manchester, CT
  • Average cloud cover in August: 33

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in August
Manchester, CT

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

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

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Manchester, Connecticut, USA

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