August weather forecast
Sterling, MA

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Weather in August

The last month of the summer, August, is another warm month in Sterling, Massachusetts, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 60.4°F (15.8°C).

Temperature

August reports an average high-temperature of a still moderately hot 80.1°F (26.7°C), slightly varied from July's 81.9°F (27.7°C). Sterling's nighttime temperature during August is consistently averaged at a moderate 60.4°F (15.8°C).

Humidity

The average relative humidity in August is 76%.

Rainfall

In August, the rain falls for 14.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 150.4 rainfall days, and 28.86" (733mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Sterling, the average length of the day in August is 13h and 51min.
On the first day of August, sunrise is at 5:40 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 7:22 pm EDT.

Sunshine

The month with the most sunshine in Sterling is August, with an average of 10.2h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Sterling, Massachusetts. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In August, a daily UV index of 6 turns into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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Frequently asked questions

What is the usual temperature for Sterling in August?

August temperatures vary between a high-temperature of 80.1°F (26.7°C) and a low-temperature of 60.4°F (15.8°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in August in Sterling?

In August, the average relative humidity in Sterling is 76%.

How many days does it rain in August in Sterling?

In August, in Sterling, Massachusetts, the rain falls for 14.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated.

When it does not snow in Sterling?

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

What is the average length of the day in August in Sterling?

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

When are sunrise and sunset in August in Sterling?

On the first day of August in Sterling, sunrise is at 5:40 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 7:22 pm EDT.

What month has the most sunshine in Sterling?

August has the most sunshine of the year in Sterling, with an average of 10.2h of sunshine.

How long on average sun shines in August in Sterling?

In August, the average sunshine duration in Sterling is 10.2h.

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

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

What is the UV index intensity in August in Sterling?

In August, the average daily maximum UV index in Sterling is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
Sterling, MA

Average temperature in August - Sterling, MA
  • Average high temperature in August: 80.1°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 (31.5°F).

  • Average low temperature in August: 60.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in August
Sterling, MA

Average pressure in August - Sterling, 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
Sterling, MA

Average wind speed in August - Sterling, 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
Sterling, MA

Average humidity in August - Sterling, MA
  • Average humidity in August: 76%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in August
Sterling, MA

Average rainfall in August - Sterling, MA
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in August
Sterling, MA

Average rainfall days in August - Sterling, MA
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in August
Sterling, MA

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

The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Sterling, MA

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

The month with the highest number of snowfall days is February (9.4 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
Sterling, MA

Average daylight in August / Average sunshine in August - Sterling, 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 1min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Sterling, MA

Average sunshine days in August - Sterling, MA
  • Average sunshine days in August: 14.6 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in August
Sterling, MA

Average UV index in August - Sterling, 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
Sterling, MA

Average cloud cover in August - Sterling, 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).

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Average visibility in August
Sterling, MA

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

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

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Sterling, Massachusetts, USA

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