August weather forecast
Chatham, VA

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Weather in August

August, the last month of the summer in Chatham, is another hot month, with an average temperature varying between 86.7°F (30.4°C) and 64.4°F (18°C).

Temperature

The advent of August sees the average high-temperature at a still tropical 86.7°F (30.4°C), subtly shifted from July's 88.7°F (31.5°C). In August, the temperature in Chatham registers a significant dip to an average of 64.4°F (18°C) at night.

Heat index

August's heat index is calculated to be a fiery hot 98.6°F (37°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Chatham, the average relative humidity in August is 72%.

Rainfall

In August, in Chatham, Virginia, the rain falls for 16.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Chatham, there are 158.8 rainfall days, and 30.91" (785mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Chatham, Virginia.

Daylight

In August, the average length of the day is 13h and 32min.
On the first day of the month, sunrise is at 6:23 am and sunset at 8:23 pm. On the last day of August, sunrise is at 6:48 am and sunset at 7:46 pm EDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is it in Chatham in August?

The average high-temperature and low-temperature during August are 86.7°F (30.4°C) and 64.4°F (18°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 98.6°F (37°C).

What is the average humidity in August in Chatham?

In August, the average relative humidity in Chatham is 72%.

How many days does it rain in August in Chatham?

In Chatham, in August, it is raining for 16.4 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Chatham?

May through October are months without snowfall.

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

The average day length in August is 13h and 32min.

When are sunrise and sunset in August in Chatham?

In August, on the first day of the month, sunrise is at 6:23 am and sunset at 8:23 pm. On the last day of the month, in Chatham, sunrise is at 6:48 am and sunset at 7:46 pm EDT.

How many hours of sunshine does Chatham have in August?

The average sunshine duration in August in Chatham is 10.1h.

When is the highest UV index in Chatham?

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

How high is the UV index in August in Chatham?

In Chatham, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high 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
Chatham, VA

Average temperature in August - Chatham, VA
  • Average high temperature in August: 86.7°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (43.3°F).

  • Average low temperature in August: 64.4°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in August
Chatham, VA

Average pressure in August - Chatham, VA
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in August
Chatham, VA

Average wind speed in August - Chatham, VA
  • Average wind speed in August: 4.3mph

The windiest months (with the highest average wind speed) are February and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in August
Chatham, VA

Average humidity in August - Chatham, VA
  • Average humidity in August: 72%

The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in August
Chatham, VA

Average rainfall in August - Chatham, VA
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in August
Chatham, VA

Average rainfall days in August - Chatham, VA
  • Average rainfall days in August: 16.4 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in August
Chatham, VA

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

The month with the highest snowfall is February (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Chatham, VA

Average snowfall days in August - Chatham, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Chatham, VA
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in August: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days in August
Chatham, VA

Average sunshine days in August - Chatham, VA
  • Average sunshine days in August: 11.9 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index in August
Chatham, VA

Average UV index in August - Chatham, 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, February and December (UV index 2).

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Average cloud cover in August
Chatham, VA

Average cloud cover in August - Chatham, VA
  • Average cloud cover in August: 34

The months with the most cloud cover are February and March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 31).

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Average visibility in August
Chatham, VA

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

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

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Chatham, Virginia, USA

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