August weather forecast
Williamstown, VT

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Weather in August

August, the last month of the summer in Williamstown, is another warm month, with an average temperature varying between 53.6°F (12°C) and 74.8°F (23.8°C).

Temperature

August's advent presents an average high-temperature of a still moderately hot 74.8°F (23.8°C), indicating a slight variation from the conditions of the previous month. In Williamstown, the August nights cool down to an average low of 53.6°F (12°C).

Humidity

In Williamstown, the average relative humidity in August is 80%.

Rainfall

In Williamstown, in August, during 18.6 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Williamstown, during the entire year, the rain falls for 166.6 days and collects up to 32.01" (813mm) of precipitation.

Snowfall

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

Daylight

In Williamstown, Vermont, the average length of the day in August is 13h and 58min.
On the first day of the month, sunrise is at 5:38 am and sunset at 8:14 pm. On the last day of August, sunrise is at 6:12 am and sunset at 7:27 pm EDT.

Sunshine

In August, the average sunshine is 9.7h.

UV index

The average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 4 during August leads to these instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Frequently asked questions

What is the usual temperature for Williamstown in August?

In Williamstown, in August, the average high-temperature is 74.8°F (23.8°C), and the average low-temperature is 53.6°F (12°C).

What is the average humidity in August?

The average relative humidity in August is 80%.

How much does it rain in August?

In Williamstown, during August, the rain falls for 18.6 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

What is the average length of the day in August?

The average day length in August is 13h and 58min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:38 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:27 pm EDT.

How long on average sun shines in August?

In Williamstown, the average sunshine duration in August is 9.7h.

What is the UV index intensity in August?

The average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
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
Williamstown, VT

Average temperature in August - Williamstown, VT
  • Average high temperature in August: 74.8°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in August: 53.6°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

Average pressure in August
Williamstown, VT

Average pressure in August - Williamstown, VT
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Williamstown, VT

Average wind speed in August - Williamstown, VT
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in August
Williamstown, VT

Average humidity in August - Williamstown, VT
  • Average humidity in August: 80%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

Average rainfall in August
Williamstown, VT

Average rainfall in August - Williamstown, VT
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (2.09").

Average rainfall days in August
Williamstown, VT

Average rainfall days in August - Williamstown, VT
  • Average rainfall days in August: 18.6 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in August
Williamstown, VT

Average snowfall in August - Williamstown, VT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (13.31").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Williamstown, VT

Average snowfall days in August - Williamstown, VT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (22.3 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, VT

Average daylight in August / Average sunshine in August - Williamstown, VT
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).

Average sunshine days in August
Williamstown, VT

Average sunshine days in August - Williamstown, VT
  • Average sunshine days in August: 10.3 days

The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.5 days).

Average UV index in August
Williamstown, VT

Average UV index in August - Williamstown, VT
  • Average UV index in August: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in August
Williamstown, VT

Average cloud cover in August - Williamstown, VT
  • Average cloud cover in August: 40

The months with the most cloud cover are January and February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).

Average visibility in August
Williamstown, VT

Average visibility in August - Williamstown, VT
  • Average visibility in August: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).

Williamstown, Vermont, USA

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