August weather forecastCambridge, MA
August
Weather in August
The city of Cambridge, Massachusetts, experiences an extended summer season in August. The warm weather continues, offering breathtaking sunsets over Charles River and lively evenings in outdoor cafés. Milder nights provide a welcome relief from the heat of the day. The highest temperatures have a slight decline in comparison to July, running from 63.5°F (17.5°C) to 80.4°F (26.9°C). Despite the occasional summer storm, the majority of August days bask in plenty of sunshine.Temperature
August's advent notes a subtle adjustment in average high-temperature to a still warm 80.4°F (26.9°C) from July. The nighttime temperature, during August, averages of 63.5°F (17.5°C).Humidity
The average relative humidity in August is 73%.Rainfall
In Cambridge, during August, the rain falls for 7.9 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 81.8 rainfall days, and 5.51" (140mm) of precipitation is accumulated.Snowfall
In Cambridge, snow does not fall in June through October.Daylight
The average length of the day in August is 13h and 51min.On the first day of August, sunrise is at 5:37 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:19 pm EDT.
Sunshine
August has the most sunshine of the year, with an average of 10.5h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Cambridge, MA
- Average high temperature in August: 80.4°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 (33.8°F).
- Average low temperature in August: 63.5°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in August
Cambridge, MA
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Cambridge, MA
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in August
Cambridge, MA
- Average humidity in August: 73%
The months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).
Average rainfall in August
Cambridge, MA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in August
Cambridge, MA
- Average rainfall days in August: 7.9 days
The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in August
Cambridge, MA
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
Cambridge, MA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Cambridge, MA
- Average daylight in August: 13h and 48min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Cambridge, MA
- Average sunshine days in August: 19.8 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).
Average UV index in August
Cambridge, 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).
Average cloud cover in August
Cambridge, MA
- Average cloud cover in August: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Cambridge, MA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
