August weather forecast
Colchester, VA

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Weather in August

The last month of the summer, August, is another tropical month in Colchester, Virginia, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 86°F (30°C).

Temperature

The advent of August observes an average high-temperature of a still hot 86°F (30°C), nearly identical to July's 88.2°F (31.2°C). In August, the average low-temperature is an enjoyable 66.7°F (19.3°C).

Heat index

During August, the heat index is evaluated at a very hot 96.8°F (36°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Colchester, the average relative humidity in August is 74%.

Rainfall

The month with the most rainfall in Colchester, Virginia, is August, when the rain falls for 17.7 days and typically aggregates up to 3.86" (98mm) of precipitation.

Snowfall

May through November are months without snowfall in Colchester.

Daylight

The average length of the day in August is 13h and 38min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:40 pm EDT.

Sunshine

The average sunshine in August in Colchester, Virginia, is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 in August translates into these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Colchester during August?

In Colchester, in August, the average high-temperature is 86°F (30°C), and the average low-temperature is 66.7°F (19.3°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 96.8°F (36°C).

What is the average humidity in August in Colchester?

The average relative humidity in August in Colchester, Virginia, is 74%.

What is the wettest month in Colchester?

The month with the most rainfall in Colchester, Virginia, is August, when the rain falls for 17.7 days and typically aggregates up to 3.86" (98mm) of precipitation.

How many days does it rain in August in Colchester?

In Colchester, in August, during 17.7 rainfall days, 3.86" (98mm) of precipitation is typically accumulated.

When it does not snow in Colchester?

In Colchester, snow does not fall in May through November.

What is the average length of the day in August in Colchester?

The average day length in August in Colchester, Virginia, is 13h and 38min.

When are sunrise and sunset in August in Colchester?

On the first day of August in Colchester, Virginia, sunrise is at 6:11 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:40 pm EDT.

How many hours of sunshine does Colchester have in August?

In August, the average sunshine duration is 10.3h.

What is the month with the highest UV index in Colchester?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

How high is the UV index in August in Colchester?

The average daily maximum UV index in August in Colchester, Virginia, is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to 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
Colchester, VA

Average temperature in August - Colchester, VA
  • Average high temperature in August: 86°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in August
Colchester, VA

Average pressure in August - Colchester, VA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Colchester, VA

Average wind speed in August - Colchester, VA
  • Average wind speed in August: 4.8mph

The windiest months (with the highest average wind speed) are March and April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in August
Colchester, VA

Average humidity in August - Colchester, VA
  • Average humidity in August: 74%

The months with the highest relative humidity are May, October and December (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in August
Colchester, VA

Average rainfall in August - Colchester, VA
  • Average rainfall in August: 3.86"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.01").

Average rainfall days in August
Colchester, VA

Average rainfall days in August - Colchester, VA
  • Average rainfall days in August: 17.7 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in August
Colchester, VA

Average snowfall in August - Colchester, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in August
Colchester, VA

Average snowfall days in August - Colchester, VA
  • 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 May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Colchester, VA

Average daylight in August / Average sunshine in August - Colchester, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

Average sunshine days in August
Colchester, VA

Average sunshine days in August - Colchester, VA
  • Average sunshine days in August: 11 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.6 days).

Average UV index in August
Colchester, VA

Average UV index in August - Colchester, VA
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in August
Colchester, VA

Average cloud cover in August - Colchester, VA
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in August
Colchester, VA

Average visibility in August - Colchester, VA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Colchester, Virginia, USA

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