August weather forecast
Collierville, TN

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Weather in August

August observes a continuity of the summer trend with temperatures remaining high, clocking an average of 88.3°F (31.3°C) by day. Collierville gets approximately 10.3 hours of sunshine each day, ensuring a bright climate. Pressure levels remain relatively stable, averaging at 29.97" (761mm). The end of August signifies a gradual transition towards the cooler months. As the month progresses, a slight decrease in temperature forecasts the return of cooler weather.

Temperature

The arrival of August sees a recorded average high-temperature of a still hot 88.3°F (31.3°C), showing little divergence from the previous month's conditions. Throughout August, Collierville's nights cool down to an average of 70.3°F (21.3°C).

Heat index

The heat index value for August is calculated to be a scorching 104°F (40°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. 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. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Collierville, the average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 16.3 days. Throughout August, 2.76" (70mm) of precipitation is accumulated. In Collierville, Tennessee, during the entire year, the rain falls for 153.4 days and collects up to 31.34" (796mm) of precipitation.

Snowfall

In Collierville, snow does not fall in April through October.

Daylight

The average length of the day in August is 13h and 26min.
On the first day of August, sunrise is at 6:08 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:26 pm CDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

The months with the highest UV index in Collierville are June through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 7 in August translates into these instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

An average high-temperature, in August, in Collierville, is 88.3°F (31.3°C) and the average low-temperature is 70.3°F (21.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is calculated to be 104°F (40°C).

What is the average humidity in August in Collierville?

In August, the average relative humidity is 75%.

How much does it rain in August?

In Collierville, in August, during 16.3 rainfall days, 2.76" (70mm) of precipitation is typically accumulated.

When it does not snow?

In Collierville, snow does not fall in April through October.

What is the average length of the day in August?

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

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:26 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.3h.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in August?

The average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high hazard to health 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
Collierville, TN

Average temperature in August - Collierville, TN
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in August: 70.3°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in August
Collierville, TN

Average pressure in August - Collierville, 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
Collierville, TN

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

The windiest month (with the highest average wind speed) is February (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

Average humidity in August
Collierville, TN

Average humidity in August - Collierville, TN
  • Average humidity in August: 75%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Collierville, TN

Average rainfall in August - Collierville, TN
  • Average rainfall in August: 2.76"

The wettest month (with the highest rainfall) is February (3.39").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in August
Collierville, TN

Average rainfall days in August - Collierville, TN
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is August (16.3 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in August
Collierville, TN

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

The months with the highest snowfall are January and February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Collierville, TN

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

The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Collierville, 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 months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in August
Collierville, TN

Average sunshine days in August - Collierville, TN
  • Average sunshine days in August: 11.7 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (11.7 days).

Average UV index in August
Collierville, TN

Average UV index in August - Collierville, TN
  • Average UV index in August: 7

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

Average cloud cover in August
Collierville, TN

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

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in August
Collierville, TN

Average visibility in August - Collierville, 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).

Collierville, Tennessee, USA

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