Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
In the transition from July to August, Williamstown reports an average high-temperature of a still moderately hot 76.5°F (24.7°C), indicating a close resemblance to the prior month. During August, Williamstown observes a consistent average nighttime temperature of 55.8°F (13.2°C).Humidity
In August, the average relative humidity is 80%.Rainfall
In Williamstown, during August, the rain falls for 17.3 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Williamstown, during the entire year, the rain falls for 167.1 days and collects up to 35.98" (914mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 52min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:12 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:28 pm EDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
June 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 moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Williamstown have in August?
When is the highest UV index?
How high is the UV index in August?
Average temperature in August
Williamstown, MA
- Average high temperature in August: 76.5°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in August: 55.8°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in August
Williamstown, MA
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Williamstown, MA
- Average wind speed in August: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in August
Williamstown, MA
- Average humidity in August: 80%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (77%).
Average rainfall in August
Williamstown, MA
- Average rainfall in August: 2.95"
The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is March (2.6").
Average rainfall days in August
Williamstown, MA
- Average rainfall days in August: 17.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in August
Williamstown, MA
- Average snowfall in August: 0"
The month with the highest snowfall is February (10").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Williamstown, MA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Williamstown, 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: 9h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in August
Williamstown, MA
- Average sunshine days in August: 11.7 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (9 days).
Average UV index in August
Williamstown, MA
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in August
Williamstown, MA
- Average cloud cover in August: 38
The month with the most cloud cover is February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in August
Williamstown, MA
- Average visibility in August: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Williamstown, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location