August weather forecast
Petersburg, TN

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Weather in August

The last month of the summer, August, is another tropical month in Petersburg, Tennessee, with an average temperature varying between 67.5°F (19.7°C) and 86.5°F (30.3°C).

Temperature

Petersburg experiences an average high-temperature of a still tropical 86.5°F (30.3°C) in August, subtly different from July's 87.4°F (30.8°C). Throughout the month of August, the average temperature in Petersburg dips to a comfortable 67.5°F (19.7°C) at night.

Heat index

During August, the heat index is appraised at a fiery hot 98.6°F (37°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. 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. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Petersburg, the average relative humidity in August is 76%.

Rainfall

In Petersburg, in August, during 17.5 rainfall days, 3.7" (94mm) of precipitation is typically accumulated. Throughout the year, there are 173.6 rainfall days, and 39.65" (1007mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 27min.
On the first day of the month, sunrise is at 5:55 am and sunset at 7:49 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:14 pm CDT.

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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Fend off overexposure. Sun protection is vital. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature, in August, in Petersburg, is 86.5°F (30.3°C), while the low-temperature averages to 67.5°F (19.7°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is appraised at 98.6°F (37°C).

What is the average humidity in August?

In August, the average relative humidity is 76%.

How many days does it rain in August?

In Petersburg, during August, the rain falls for 17.5 days and regularly aggregates up to 3.7" (94mm) of precipitation.

When it does not snow?

In Petersburg, snow does not fall in May through October.

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

In August, the average day length is 13h and 27min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:55 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:14 pm CDT.

How many hours of sunshine does Petersburg have in August?

The average sunshine duration in August is 10.1h.

When is the highest UV index?

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

How high is the UV index in August?

In Petersburg, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe 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, TN

Average temperature in August - Petersburg, TN
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.7°F).

  • Average low temperature in August: 67.5°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).

Average pressure in August
Petersburg, TN

Average pressure in August - Petersburg, TN
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in August
Petersburg, TN

Average wind speed in August - Petersburg, TN
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in August
Petersburg, TN

Average humidity in August - Petersburg, TN
  • Average humidity in August: 76%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Petersburg, TN

Average rainfall in August - Petersburg, TN
  • Average rainfall in August: 3.7"

The wettest month (with the highest rainfall) is February (4.37").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days in August
Petersburg, TN

Average rainfall days in August - Petersburg, TN
  • Average rainfall days in August: 17.5 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in August
Petersburg, TN

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

The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Petersburg, TN

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

The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Petersburg, TN

Average daylight in August / Average sunshine in August - Petersburg, TN
  • Average daylight in August: 13h and 2min

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

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in August
Petersburg, TN

Average sunshine days in August - Petersburg, TN
  • Average sunshine days in August: 11.8 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in August
Petersburg, TN

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

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

Average cloud cover in August
Petersburg, TN

Average cloud cover in August - Petersburg, TN
  • Average cloud cover in August: 32

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in August
Petersburg, TN

Average visibility in August - Petersburg, TN
  • Average visibility in August: 6mi

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

Petersburg, Tennessee, USA

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