August weather forecast
Williamsville, VT

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Weather in August

The last month of the summer, August, is also a moderately hot month in Williamsville, Vermont, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 56.8°F (13.8°C).

Temperature

The shift into August uncovers an average high-temperature of a still moderately hot 77.9°F (25.5°C), subtly different from the previous month. Throughout the nights in August, Williamsville experiences an average low-temperature of 56.8°F (13.8°C).

Humidity

In Williamsville, the average relative humidity in August is 77%.

Rainfall

In Williamsville, Vermont, in August, during 8.4 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Williamsville, during the entire year, the rain falls for 91.5 days and collects up to 7.8" (198mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Williamsville, Vermont, the average length of the day in August is 13h and 53min.
On the first day of August, sunrise is at 5:42 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 7:26 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.3h of 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 unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 5 in August translates into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

In Williamsville, in August, the average high-temperature is 77.9°F (25.5°C), and the average low-temperature is 56.8°F (13.8°C).

What is the average humidity in August?

In August, the average relative humidity is 77%.

How much does it rain in August?

In Williamsville, in August, it is raining for 8.4 days, with typically 0.51" (13mm) of accumulated precipitation.

When it does not snow in Williamsville?

In Williamsville, snow does not fall in May through September.

What is the average length of the day in August?

In Williamsville, the average day length in August is 13h and 53min.

What time are sunrise and sunset in August?

On the first day of August in Williamsville, sunrise is at 5:42 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 7:26 pm EDT.

What month has the most sunshine?

With an average of 10.3h of sunshine, August has the most sunshine of the year.

How long on average sun shines in August?

In Williamsville, the average sunshine duration in August is 10.3h.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Williamsville, VT

Average temperature in August - Williamsville, VT
  • Average high temperature in August: 77.9°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in August: 56.8°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in August
Williamsville, VT

Average pressure in August - Williamsville, VT
  • Average pressure in August: 29.97"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
Williamsville, VT

Average wind speed in August - Williamsville, VT
  • Average wind speed in August: 5.1mph

The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in August
Williamsville, VT

Average humidity in August - Williamsville, VT
  • Average humidity in August: 77%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

Average rainfall in August
Williamsville, VT

Average rainfall in August - Williamsville, VT
  • Average rainfall in August: 0.51"

The wettest month (with the highest rainfall) is November (0.87").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in August
Williamsville, VT

Average rainfall days in August - Williamsville, VT
  • Average rainfall days in August: 8.4 days

The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and February (4.3 days).

Average snowfall in August
Williamsville, VT

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

The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Williamsville, VT

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

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Williamsville, VT

Average daylight in August / Average sunshine in August - Williamsville, VT
  • 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: 10h and 2min

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 24min).

Average sunshine days in August
Williamsville, VT

Average sunshine days in August - Williamsville, VT
  • Average sunshine days in August: 19.6 days

The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is July (17.6 days).

Average UV index in August
Williamsville, VT

Average UV index in August - Williamsville, VT
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Williamsville, VT

Average cloud cover in August - Williamsville, VT
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in August
Williamsville, VT

Average visibility in August - Williamsville, VT
  • 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).

Williamsville, Vermont, USA

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