August weather forecast
South Lancaster, MA

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Weather in August

August, the last month of the summer in South Lancaster, is another warm month, with an average temperature varying between 60.4°F (15.8°C) and 80.1°F (26.7°C).

Temperature

South Lancaster experiences a recorded average high-temperature of a still moderately hot 80.1°F (26.7°C) in August, closely aligned with July's 81.9°F (27.7°C). South Lancaster observes an average nighttime temperature of 60.4°F (15.8°C) during August.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In South Lancaster, Massachusetts, in August, it is raining for 14.4 days, with typically 2.28" (58mm) of accumulated precipitation. In South Lancaster, during the entire year, the rain falls for 150.4 days and collects up to 28.86" (733mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In South Lancaster, the average length of the day in August is 13h and 51min.
On the first day of the month, sunrise is at 5:39 am and sunset at 8:06 pm. On the last day of August, in South Lancaster, sunrise is at 6:11 am and sunset at 7:22 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during August leads to these advisories:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What is the usual temperature for South Lancaster in August?

During August, South Lancaster experiences an average high-temperature of 80.1°F (26.7°C) and a low-temperature of 60.4°F (15.8°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is estimated at 87.8°F (31°C).

What is the average humidity in August in South Lancaster?

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

How many days does it rain in August in South Lancaster?

In South Lancaster, in August, during 14.4 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

When it does not snow in South Lancaster?

In South Lancaster, snow does not fall in June through September.

How many hours of daylight does South Lancaster have in August?

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

When is the sunrise / sunset in August in South Lancaster?

On the first day of August in South Lancaster, Massachusetts, sunrise is at 5:39 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 South Lancaster?

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

How long on average sun shines in August in South Lancaster?

The average sunshine duration in August in South Lancaster, Massachusetts, is 10.2h.

What is the month with the highest UV index in South Lancaster?

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

How high is the UV index in August in South Lancaster?

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

Average temperature in August - South Lancaster, 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
South Lancaster, MA

Average pressure in August - South Lancaster, 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
South Lancaster, MA

Average wind speed in August - South Lancaster, 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
South Lancaster, MA

Average humidity in August - South Lancaster, 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
South Lancaster, MA

Average rainfall in August - South Lancaster, 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
South Lancaster, MA

Average rainfall days in August - South Lancaster, 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
South Lancaster, MA

Average snowfall in August - South Lancaster, 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
South Lancaster, MA

Average snowfall days in August - South Lancaster, 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
South Lancaster, MA

Average daylight in August / Average sunshine in August - South Lancaster, 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
South Lancaster, MA

Average sunshine days in August - South Lancaster, 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
South Lancaster, MA

Average UV index in August - South Lancaster, 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
South Lancaster, MA

Average cloud cover in August - South Lancaster, 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
South Lancaster, MA

Average visibility in August - South Lancaster, 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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South Lancaster, Massachusetts, USA

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