August weather forecast
Billerica, MA

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Weather in August

The last month of the summer, August, is another warm month in Billerica, Massachusetts, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 80.6°F (27°C).

Temperature

A minor adjustment in Billerica's average high-temperature is noted with the start of August, touching a still moderately hot 80.6°F (27°C) from July's 82.2°F (27.9°C). In Billerica, an average nighttime temperature of 62.2°F (16.8°C) is expected during August.

Heat index

August's heat index is computed to be 84.2°F (29°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

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

Rainfall

In August, the rain falls for 13.1 days. Throughout August, 1.93" (49mm) of precipitation is accumulated. In Billerica, during the entire year, the rain falls for 145.9 days and collects up to 27.48" (698mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 52min.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:09 am and sunset at 7:20 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.6h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Billerica. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

An average high-temperature, in August, in Billerica, is 80.6°F (27°C) and the average low-temperature is 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 84.2°F (29°C).

What is the average humidity in August?

In August, the average relative humidity is 74%.

How many days does it rain in August?

In Billerica, in August, during 13.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in Billerica?

June through September are months without snowfall.

What is the average length of the day in August?

In August, the average day length is 13h and 52min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:37 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:20 pm EDT.

What month has the most sunshine?

With an average of 10.6h of sunshine, August has the most sunshine of the year.

How many hours of sunshine does Billerica have in August?

In Billerica, the average sunshine duration in August is 10.6h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In Billerica, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes 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
Billerica, MA

Average temperature in August - Billerica, MA
  • Average high temperature in August: 80.6°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 (32.5°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in August
Billerica, MA

Average pressure in August - Billerica, 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).

Average wind speed in August
Billerica, MA

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

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in August
Billerica, MA

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

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (70%).

Average rainfall in August
Billerica, MA

Average rainfall in August - Billerica, MA
  • Average rainfall in August: 1.93"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.46").

Average rainfall days in August
Billerica, MA

Average rainfall days in August - Billerica, MA
  • Average rainfall days in August: 13.1 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.9 days).

Average snowfall in August
Billerica, MA

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

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Billerica, MA

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

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Billerica, MA

Average daylight in August / Average sunshine in August - Billerica, MA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in August
Billerica, MA

Average sunshine days in August - Billerica, MA
  • Average sunshine days in August: 15.9 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (13.6 days).

Average UV index in August
Billerica, MA

Average UV index in August - Billerica, 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).

Average cloud cover in August
Billerica, MA

Average cloud cover in August - Billerica, MA
  • Average cloud cover in August: 31

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in August
Billerica, MA

Average visibility in August - Billerica, 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).

Billerica, Massachusetts, USA

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