August weather forecast
Petersburg, VA

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Weather in August

As summer begins to wind down, August continues with its high temperatures, but not quite surpassing July's peak. Climatic conditions in Petersburg, Virginia start shifting, as the amount of sunshine slightly reduces. The daylight hours slowly start to decrease, indicating a lean towards the onset of Autumn. Despite these subtle changes, August still remains a warmly humid month with top temperatures hitting 87.6°F (30.9°C).

Temperature

At the onset of August, Petersburg records an average high-temperature of a still tropical 87.6°F (30.9°C), showing little deviation from the preceding month. Petersburg's nights in August cool down to an average low-temperature of 68°F (20°C).

Heat index

August's average heat index is computed to be a sweltering 100.4°F (38°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in August is 73%.

Rainfall

August is the month with the most rainfall in Petersburg. Rain falls for 12 days and accumulates 1.22" (31mm) of precipitation.

Snowfall

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

Daylight

In Petersburg, the average length of the day in August is 13h and 33min.
On the first day of August, sunrise is at 6:14 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:39 pm EDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

The average daily maximum UV index in August in Petersburg is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Petersburg?

The high-temperature in Petersburg, Virginia, during August is 87.6°F (30.9°C) and the low-temperature is 68°F (20°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 100.4°F (38°C).

What is the average humidity in August in Petersburg?

The average relative humidity in August is 73%.

What is the rainiest month in Petersburg?

August is the month with the most rainfall. Rain falls for 12 days and accumulates 1.22" (31mm) of precipitation.

How many days does it rain in August in Petersburg?

In Petersburg, in August, it is raining for 12 days, with typically 1.22" (31mm) of accumulated precipitation.

When it does not snow in Petersburg?

May through October are months without snowfall.

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

In August, the average day length in Petersburg, Virginia, is 13h and 33min.

When are sunrise and sunset in August in Petersburg?

On the first day of August, sunrise is at 6:14 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:39 pm EDT.

How many hours of sunshine does Petersburg have in August?

The average sunshine duration in August in Petersburg, Virginia, is 10.3h.

What is the UV index reading in August in Petersburg?

In August, the average daily maximum UV index in Petersburg is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
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
Petersburg, VA

Average temperature in August - Petersburg, VA
  • Average high temperature in August: 87.6°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (45.3°F).

  • Average low temperature in August: 68°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30°F).

Average pressure in August
Petersburg, VA

Average pressure in August - Petersburg, 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 (29.96"Hg).

Average wind speed in August
Petersburg, VA

Average wind speed in August - Petersburg, VA
  • Average wind speed in August: 5.2mph

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in August
Petersburg, VA

Average humidity in August - Petersburg, VA
  • Average humidity in August: 73%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).

Average rainfall in August
Petersburg, VA

Average rainfall in August - Petersburg, VA
  • Average rainfall in August: 1.22"

The wettest month (with the highest rainfall) is August (1.22").
The driest month (with the least rainfall) is September (0.59").

Average rainfall days in August
Petersburg, VA

Average rainfall days in August - Petersburg, VA
  • Average rainfall days in August: 12 days

The month with the highest number of rainy days is May (12.2 days).
The month with the least rainy days is October (5.6 days).

Average snowfall in August
Petersburg, VA

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

The month with the highest snowfall is February (0.35").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Petersburg, VA

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

The month with the highest number of snowfall days is January (1.8 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
Petersburg, VA

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

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

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 5h and 24min).

Average sunshine days in August
Petersburg, VA

Average sunshine days in August - Petersburg, VA
  • Average sunshine days in August: 16.8 days

The month with the most sunshine days is October (23.6 days).
The month with the least sunshine days is May (15.3 days).

Average UV index in August
Petersburg, VA

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in August
Petersburg, VA

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

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Petersburg, VA

Average visibility in August - Petersburg, 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).

Petersburg, Virginia, USA

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