August weather forecast
Sunderland, MA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Sunderland, Massachusetts, with an average temperature varying between 58.3°F (14.6°C) and 79.2°F (26.2°C).

Temperature

The arrival of August marks a slight shift to an average high-temperature of a still moderately hot 79.2°F (26.2°C) from July's 81.3°F (27.4°C). An average low-temperature of 58.3°F (14.6°C) is recorded in the month of August.

Humidity

The average relative humidity in August is 77%.

Rainfall

In Sunderland, in August, during 13.5 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Sunderland, Massachusetts, during the entire year, the rain falls for 147.7 days and collects up to 28.9" (734mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 51min.
On the first day of the month, sunrise is at 5:43 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:15 am and sunset at 7:25 pm EDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during August translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What are the temperatures in August?

The high-temperature during August is 79.2°F (26.2°C) and the low-temperature is 58.3°F (14.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 86°F (30°C).

What is the average humidity in August?

In Sunderland, the average relative humidity in August is 77%.

How much does it rain in August?

In Sunderland, in August, during 13.5 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow?

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

How many hours of daylight does Sunderland have in August?

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

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:43 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:25 pm EDT.

How many hours of sunshine does Sunderland have in August?

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

When is the highest UV index?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

How high is the UV index in August?

In Sunderland, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Sunderland, MA

Average temperature in August - Sunderland, MA
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in August: 58.3°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in August
Sunderland, MA

Average pressure in August - Sunderland, MA
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Sunderland, MA

Average wind speed in August - Sunderland, MA
  • Average wind speed in August: 5.1mph

The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in August
Sunderland, MA

Average humidity in August - Sunderland, MA
  • Average humidity in August: 77%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).

Average rainfall in August
Sunderland, MA

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

The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in August
Sunderland, MA

Average rainfall days in August - Sunderland, MA
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is April (15.3 days).
The month with the least rainy days is February (8.9 days).

Average snowfall in August
Sunderland, MA

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

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Sunderland, MA

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

The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Sunderland, 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 July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in August
Sunderland, MA

Average sunshine days in August - Sunderland, MA
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (13.2 days).

Average UV index in August
Sunderland, MA

Average UV index in August - Sunderland, MA
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in August
Sunderland, MA

Average cloud cover in August - Sunderland, MA
  • Average cloud cover in August: 35

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in August
Sunderland, MA

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

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

Sunderland, Massachusetts, USA

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