August weather forecast
Somerville, TN

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Weather in August

The last month of the summer, August, is another hot month in Somerville, Tennessee, with an average temperature varying between 69.4°F (20.8°C) and 87.6°F (30.9°C).

Temperature

Somerville notes an average high-temperature of a still tropical 87.6°F (30.9°C) in August, hardly diverging from July. An average low-temperature of 69.4°F (20.8°C) is anticipated throughout the nights in Somerville during August.

Heat index

During August, the heat index is appraised at a very hot 102.2°F (39°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Somerville, during August, the rain falls for 13.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 132.5 rainfall days, and 16.26" (413mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 26min.
On the first day of August, sunrise is at 6:06 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:25 pm CDT.

Sunshine

In Somerville, the average sunshine in August is 10.4h.

UV index

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during August translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

Somerville in August has an average high-temperature of 87.6°F (30.9°C) and an average low-temperature of 69.4°F (20.8°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 102.2°F (39°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 Somerville, during August, the rain falls for 13.8 days and regularly aggregates up to 1.65" (42mm) of precipitation.

When it does not snow in Somerville?

April through October are months without snowfall.

How many hours of daylight does Somerville have in August?

In Somerville, Tennessee, the average day length in August is 13h and 26min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:06 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:25 pm CDT.

How long on average sun shines in August?

In Somerville, the average sunshine duration in August is 10.4h.

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Somerville, TN

Average temperature in August - Somerville, TN
  • Average high temperature in August: 87.6°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (46.4°F).

  • Average low temperature in August: 69.4°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).

Average pressure in August
Somerville, TN

Average pressure in August - Somerville, TN
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Somerville, TN

Average wind speed in August - Somerville, TN
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

Average humidity in August
Somerville, TN

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

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Somerville, TN

Average rainfall in August - Somerville, TN
  • Average rainfall in August: 1.65"

The wettest month (with the highest rainfall) is July (1.89").
The driest months (with the least rainfall) are September and November (0.75").

Average rainfall days in August
Somerville, TN

Average rainfall days in August - Somerville, TN
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in August
Somerville, TN

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

The month with the highest snowfall is February (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Somerville, TN

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

The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Somerville, 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 2min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in August
Somerville, TN

Average sunshine days in August - Somerville, TN
  • Average sunshine days in August: 13.2 days

The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is July (12.4 days).

Average UV index in August
Somerville, TN

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

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in August
Somerville, TN

Average cloud cover in August - Somerville, TN
  • Average cloud cover in August: 27

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in August
Somerville, TN

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

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

Somerville, Tennessee, USA

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