August weather forecastGreenfield, MA
August
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
Greenfield indicates an average high-temperature of a still warm 78.6°F (25.9°C) in August, showing minor variation from July's 81.1°F (27.3°C). Throughout the month of August, Greenfield expects an average low of 58.1°F (14.5°C).Humidity
In August, the average relative humidity 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
June through September are months without snowfall.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.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 during August leads to these advisories:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in August /
Average sunshine in August
Greenfield, MA
- Average daylight in August: 13h and 54min
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 12min
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).
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).
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).
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).
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).
