August weather forecast
Marlborough, MA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Marlborough, Massachusetts, with an average temperature varying between 61.7°F (16.5°C) and 80.4°F (26.9°C).

Temperature

The onset of August marks an average high-temperature of a still warm 80.4°F (26.9°C), hardly differing from July's 82°F (27.8°C). Marlborough observes an average nighttime temperature of 61.7°F (16.5°C) during August.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In Marlborough, in August, during 13.7 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Marlborough, during the entire year, the rain falls for 140.8 days and collects up to 26.34" (669mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 51min.
On the first day of August, sunrise is at 5:39 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 7:21 pm EDT.

Sunshine

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

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: During August, 6 as the daily maximum UV index converts into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

What are the temperatures in August?

In August, in Marlborough, the average high-temperature is 80.4°F (26.9°C), and the average low-temperature is 61.7°F (16.5°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in July is appraised at 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August is 75%.

How many days does it rain in August?

In Marlborough, in August, during 13.7 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

When it does not snow in Marlborough?

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

How many hours of daylight does Marlborough have in August?

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

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:39 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 7:21 pm EDT.

What month has the most sunshine?

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

How long on average sun shines in August?

The average sunshine duration in August is 10.3h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In Marlborough, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Marlborough, MA

Average temperature in August - Marlborough, MA
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in August: 61.7°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in August
Marlborough, MA

Average pressure in August - Marlborough, 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).

Average wind speed in August
Marlborough, MA

Average wind speed in August - Marlborough, 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).

Average humidity in August
Marlborough, MA

Average humidity in August - Marlborough, MA
  • 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%).

Average rainfall in August
Marlborough, MA

Average rainfall in August - Marlborough, MA
  • Average rainfall in August: 2.13"

The wettest months (with the highest rainfall) are March, November and December (2.56").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in August
Marlborough, MA

Average rainfall days in August - Marlborough, MA
  • Average rainfall days in August: 13.7 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in August
Marlborough, MA

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

The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Marlborough, MA

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

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Marlborough, 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 48min).

Average sunshine days in August
Marlborough, MA

Average sunshine days in August - Marlborough, MA
  • Average sunshine days in August: 15.6 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is April (13.4 days).

Average UV index in August
Marlborough, MA

Average UV index in August - Marlborough, 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
Marlborough, MA

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

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in August
Marlborough, MA

Average visibility in August - Marlborough, MA
  • Average visibility in August: 5mi

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

Marlborough, Massachusetts, USA

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