August weather forecast
Chestnut Hill, MA

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Weather in August

August, the last month of the summer in Chestnut Hill, is another warm month, with an average temperature fluctuating between 63°F (17.2°C) and 81°F (27.2°C).

Temperature

Chestnut Hill measures an average high-temperature of a still warm 81°F (27.2°C) in August, nearly consistent with the preceding month. Chestnut Hill records a steady low-temperature average of 63°F (17.2°C) during August.

Heat index

The average heat index in August is calculated to be 84.2°F (29°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in August is 73%.

Rainfall

In Chestnut Hill, during August, the rain falls for 7.8 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Chestnut Hill, during the entire year, the rain falls for 85.9 days and collects up to 5.87" (149mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

In Chestnut Hill, the average length of the day in August is 13h and 50min.
On the first day of the month, sunrise is at 5:38 am and sunset at 8:03 pm. On the last day of August, in Chestnut Hill, sunrise is at 6:09 am and sunset at 7:19 pm EDT.

Sunshine

With an average of 10.5h of sunshine, August has the most sunshine of the year in Chestnut Hill.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during August leads to these advisories:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What is the usual temperature for Chestnut Hill in August?

In Chestnut Hill, in August, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 63°F (17.2°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 84.2°F (29°C).

What is the average humidity in August in Chestnut Hill?

The average relative humidity in August in Chestnut Hill is 73%.

How many days does it rain in August in Chestnut Hill?

In Chestnut Hill, in August, it is raining for 7.8 days, with typically 0.43" (11mm) of accumulated precipitation.

When it does not snow in Chestnut Hill?

June through October are months without snowfall in Chestnut Hill, Massachusetts.

How many hours of daylight does Chestnut Hill have in August?

In Chestnut Hill, Massachusetts, the average day length in August is 13h and 50min.

When are sunrise and sunset in August in Chestnut Hill?

In August, on the first day of the month, sunrise is at 5:38 am and sunset at 8:03 pm. On the last day of the month, in Chestnut Hill, sunrise is at 6:09 am and sunset at 7:19 pm EDT.

What month has the most sunshine in Chestnut Hill?

The month with the most sunshine in Chestnut Hill is August, with an average of 10.5h of sunshine.

How long on average sun shines in August in Chestnut Hill?

The average sunshine duration in August in Chestnut Hill is 10.5h.

What is the month with the highest UV index in Chestnut Hill?

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

How high is the UV index in August in Chestnut Hill?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Chestnut Hill, MA

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

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.6°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 (21.7°F).

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Average pressure in August
Chestnut Hill, MA

Average pressure in August - Chestnut Hill, MA
  • Average pressure in August: 29.98"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
Chestnut Hill, MA

Average wind speed in August - Chestnut Hill, MA
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in August
Chestnut Hill, MA

Average humidity in August - Chestnut Hill, MA
  • Average humidity in August: 73%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in August
Chestnut Hill, MA

Average rainfall in August - Chestnut Hill, MA
  • Average rainfall in August: 0.43"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").

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Average rainfall days in August
Chestnut Hill, MA

Average rainfall days in August - Chestnut Hill, MA
  • Average rainfall days in August: 7.8 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).

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Average snowfall in August
Chestnut Hill, MA

Average snowfall in August - Chestnut Hill, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Chestnut Hill, MA

Average snowfall days in August - Chestnut Hill, MA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.9 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
Chestnut Hill, MA

Average daylight in August / Average sunshine in August - Chestnut Hill, 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 3min

The month with the most sunshine is August (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 in August
Chestnut Hill, MA

Average sunshine days in August - Chestnut Hill, MA
  • Average sunshine days in August: 19.9 days

The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).

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Average UV index in August
Chestnut Hill, MA

Average UV index in August - Chestnut Hill, 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
Chestnut Hill, MA

Average cloud cover in August - Chestnut Hill, MA
  • Average cloud cover in August: 32

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in August
Chestnut Hill, MA

Average visibility in August - Chestnut Hill, MA
  • 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).

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Chestnut Hill, Massachusetts, USA

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