August weather forecast
Greenfield, MA

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Weather in August

August is a fascinating month in Greenfield, Massachusetts with summer's grip gradually lessening. The temperatures scale down slightly from July, but the summer vibes remain. As daylight hours decrease, a slight nip enters the air by the end of the month. The transition from summer to fall is evident by late August, thus painting a differing landscape as September arrives.

Temperature

August's weather in Greenfield records an average high-temperature of a still moderately hot 78.6°F (25.9°C), showing little deviation from July. Greenfield reports a consistent average low-temperature of 58.1°F (14.5°C) throughout August nights.

Humidity

The average relative humidity in August is 77%.

Rainfall

In Greenfield, in August, during 15.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Greenfield, during the entire year, the rain falls for 158.8 days and collects up to 30" (762mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 52min.
On the first day of August in Greenfield, sunrise is at 5:43 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:25 pm EDT.

Sunshine

July and August, with an average of 10.2h of sunshine, are months with the most sunshine in Greenfield, Massachusetts.

UV index

The months with the highest UV index in Greenfield are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What are August temperatures in Greenfield?

In Greenfield, in August, the average high-temperature is 78.6°F (25.9°C), and the average low-temperature is 58.1°F (14.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is appraised at 86°F (30°C).

What is the average humidity in August in Greenfield?

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

How much does it rain in Greenfield in August?

In Greenfield, Massachusetts, in August, during 15.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow in Greenfield?

June through September are months without snowfall in Greenfield.

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

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

When is the sunrise / sunset in August in Greenfield?

In August, on the first day of the month, sunrise is at 5:43 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:25 pm EDT.

What is the month with the most sunshine in Greenfield?

The months with the most sunshine in Greenfield, Massachusetts, are July and August, with an average of 10.2h of sunshine.

How long on average sun shines in August in Greenfield?

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

What are the months with the highest UV index in Greenfield?

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

How high is the UV index in August in Greenfield?

The average daily maximum UV index in August in Greenfield 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
Greenfield, MA

Average temperature in August - Greenfield, MA
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in August: 58.1°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

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Average pressure in August
Greenfield, MA

Average pressure in August - Greenfield, 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).

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Average wind speed in August
Greenfield, MA

Average wind speed in August - Greenfield, MA
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in August
Greenfield, MA

Average humidity in August - Greenfield, 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%).

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Average rainfall in August
Greenfield, MA

Average rainfall in August - Greenfield, MA
  • Average rainfall in August: 2.17"

The wettest months (with the highest rainfall) are October and December (3.03").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in August
Greenfield, MA

Average rainfall days in August - Greenfield, MA
  • Average rainfall days in August: 15.4 days

The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in August
Greenfield, MA

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

The month with the highest snowfall is February (7.01").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Greenfield, MA

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

The month with the highest number of snowfall days is February (10.4 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
Greenfield, MA

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

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in August
Greenfield, MA

Average sunshine days in August - Greenfield, MA
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in August
Greenfield, MA

Average UV index in August - Greenfield, 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).

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Average cloud cover in August
Greenfield, MA

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

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in August
Greenfield, MA

Average visibility in August - Greenfield, 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).

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Greenfield, Massachusetts, USA

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