August weather forecast
Boston, VA

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Weather in August

August, the last month of the summer in Boston, is also a moderately hot month, with an average temperature varying between 85.5°F (29.7°C) and 64.6°F (18.1°C).

Temperature

The arrival of August records an average high-temperature of a warm 85.5°F (29.7°C), closely related to the 87.6°F (30.9°C) observed in July. Throughout August, Boston registers a consistent average low-temperature of 64.6°F (18.1°C).

Heat index

August's heat index is evaluated at a fiery hot 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In August, the average relative humidity in Boston is 73%.

Rainfall

In Boston, in August, during 14.6 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Boston, during the entire year, the rain falls for 144.4 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

June through October are months without snowfall in Boston.

Daylight

In Boston, the average length of the day in August is 13h and 37min.
On the first day of the month, sunrise is at 6:15 am and sunset at 8:22 pm. On the last day of August, in Boston, sunrise is at 6:41 am and sunset at 7:43 pm EDT.

Sunshine

In Boston, the average sunshine in August is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Boston, Virginia. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 6 during August translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Boston in August?

During August, Boston experiences an average high-temperature of 85.5°F (29.7°C) and a low-temperature of 64.6°F (18.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 95°F (35°C).

What is the average humidity in August in Boston?

In Boston, Virginia, the average relative humidity in August is 73%.

How much does it rain in Boston in August?

In August, in Boston, the rain falls for 14.6 days. Throughout August, 2.36" (60mm) of precipitation is accumulated.

When it does not snow in Boston?

In Boston, Virginia, snow does not fall in June through October.

How many hours of daylight does Boston have in August?

In August, the average day length is 13h and 37min.

When is the sunrise / sunset in August in Boston?

In August, on the first day of the month, sunrise is at 6:15 am and sunset at 8:22 pm. On the last day of the month, in Boston, Virginia, sunrise is at 6:41 am and sunset at 7:43 pm EDT.

How many hours of sunshine does Boston have in August?

In August, the average sunshine duration in Boston is 10.1h.

What are the months with the highest UV index in Boston?

The months with the highest UV index in Boston are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Boston?

In August, the average daily maximum UV index in Boston, Virginia, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Boston, VA

Average temperature in August - Boston, VA
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (41.4°F).

  • Average low temperature in August: 64.6°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in August
Boston, VA

Average pressure in August - Boston, VA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Boston, VA

Average wind speed in August - Boston, VA
  • Average wind speed in August: 4.6mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in August
Boston, VA

Average humidity in August - Boston, VA
  • Average humidity in August: 73%

The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (72%).

Average rainfall in August
Boston, VA

Average rainfall in August - Boston, VA
  • Average rainfall in August: 2.36"

The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (1.46").

Average rainfall days in August
Boston, VA

Average rainfall days in August - Boston, VA
  • Average rainfall days in August: 14.6 days

The month with the highest number of rainy days is May (16.1 days).
The months with the least rainy days are January and November (8.3 days).

Average snowfall in August
Boston, VA

Average snowfall in August - Boston, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Boston, VA

Average snowfall days in August - Boston, VA
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (4.8 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
Boston, VA

Average daylight in August / Average sunshine in August - Boston, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in August
Boston, VA

Average sunshine days in August - Boston, VA
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (12.5 days).

Average UV index in August
Boston, VA

Average UV index in August - Boston, VA
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Boston, VA

Average cloud cover in August - Boston, VA
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Boston, VA

Average visibility in August - Boston, VA
  • Average visibility in August: 6mi

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

Boston, Virginia, USA

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