August weather forecastShirley, MA
August
Weather in August
August, the last month of the summer in Shirley, is also a moderately hot month, with an average temperature varying between 80.2°F (26.8°C) and 60.4°F (15.8°C).Temperature
August's climate shows a minor adjustment in average high-temperatures to a still moderately hot 80.2°F (26.8°C) from July's 82°F (27.8°C). Shirley's temperature lowers to a mean of 60.4°F (15.8°C) during the nights in August.Humidity
In Shirley, Massachusetts, the average relative humidity in August is 75%.Rainfall
In Shirley, in August, during 13.2 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Shirley, during the entire year, the rain falls for 142.2 days and collects up to 26.97" (685mm) of precipitation.Snowfall
In Shirley, snow does not fall in June through September.Daylight
In Shirley, the average length of the day in August is 13h and 52min.On the first day of August in Shirley, 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.
Sunshine
The month with the most sunshine is August, with an average of 10.3h 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 ordinary individuals.Note: In August, the maximum UV index of 6 translates into these guidelines:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Shirley, MA
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°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 (19.4°F).
Average pressure in August
Shirley, MA
- Average pressure in August: 29.97"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).
Average wind speed in August
Shirley, MA
- Average wind speed in August: 5.4mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in August
Shirley, MA
- Average humidity in August: 75%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall in August
Shirley, MA
- Average rainfall in August: 1.81"
The wettest month (with the highest rainfall) is December (2.8").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in August
Shirley, MA
- Average rainfall days in August: 13.2 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in August
Shirley, MA
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Shirley, MA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Shirley, 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 18min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in August
Shirley, MA
- Average sunshine days in August: 16.4 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in August
Shirley, 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
Shirley, 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).
Average visibility in August
Shirley, MA
- Average visibility in August: 5mi
The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).





