August weather forecast
Acton, MA

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Weather in August

August, the last month of the summer in Acton, is also a moderately hot month, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 62.1°F (16.7°C).

Temperature

During August, Acton observes a subtle ascent to a still warm 81°F (27.2°C) from July's 82.4°F (28°C) in the average high-temperature. Acton, during the nights of August, experiences an average temperature drop to a refreshing 62.1°F (16.7°C).

Heat index

For most parts of August, the heat index is appraised at a tropical 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In August, the average relative humidity is 74%.

Rainfall

In August, the rain falls for 11.3 days. Throughout August, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 116.3 rainfall days, and 15.87" (403mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 51min.
On the first day of August, sunrise is at 5:38 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 7:21 pm EDT.

Sunshine

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

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Acton, Massachusetts. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What is the average August temperature in Acton?

The high-temperature, in August, in Acton, is 81°F (27.2°C), while the low-temperature averages to 62.1°F (16.7°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 86°F (30°C).

What is the average humidity in August in Acton?

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

How much does it rain in Acton in August?

In Acton, during August, the rain falls for 11.3 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Acton?

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

How many hours of daylight does Acton have in August?

In August, the average day length is 13h and 51min.

What time are sunrise and sunset in August in Acton?

In August, on the first day of the month, sunrise is at 5:38 am and sunset at 8:05 pm. On the last day of the month, in Acton, Massachusetts, sunrise is at 6:10 am and sunset at 7:21 pm EDT.

What month has the most sunshine in Acton?

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

How many hours of sunshine does Acton have in August?

In Acton, Massachusetts, the average sunshine duration in August is 10.3h.

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

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

How high is the UV index in August in Acton?

In Acton, Massachusetts, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's 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
Acton, MA

Average temperature in August - Acton, MA
  • Average high temperature in August: 81°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in August: 62.1°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

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Average pressure in August
Acton, MA

Average pressure in August - Acton, MA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Acton, MA

Average wind speed in August - Acton, MA
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in August
Acton, MA

Average humidity in August - Acton, MA
  • Average humidity in August: 74%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in August
Acton, MA

Average rainfall in August - Acton, MA
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is October (1.65").
The driest month (with the least rainfall) is September (0.79").

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Average rainfall days in August
Acton, MA

Average rainfall days in August - Acton, MA
  • Average rainfall days in August: 11.3 days

The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is February (5.4 days).

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Average snowfall in August
Acton, MA

Average snowfall in August - Acton, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Acton, MA

Average snowfall days in August - Acton, MA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.4 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
Acton, MA

Average daylight in August / Average sunshine in August - Acton, MA
  • 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 6min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in August
Acton, MA

Average sunshine days in August - Acton, MA
  • Average sunshine days in August: 17.6 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is April (15.8 days).

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Average UV index in August
Acton, MA

Average UV index in August - Acton, MA
  • 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).

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Average cloud cover in August
Acton, MA

Average cloud cover in August - Acton, MA
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in August
Acton, MA

Average visibility in August - Acton, MA
  • Average visibility in August: 6mi

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

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Acton, Massachusetts, USA

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