August weather forecastMercer, TN
August
Weather in August
The last month of the summer, August, is another hot month in Mercer, Tennessee, with an average temperature varying between 87.4°F (30.8°C) and 69.1°F (20.6°C).Temperature
Stepping into August, Mercer records an average high-temperature of a still tropical 87.4°F (30.8°C), almost consistent with July. Nighttime temperatures hover around an average low of 69.1°F (20.6°C) in August.Heat index
The heat index in August is appraised at a sweltering 102.2°F (39°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. 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. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
The average relative humidity in August in Mercer is 76%.Rainfall
In Mercer, in August, it is raining for 11.3 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, there are 125.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Mercer, Tennessee.Daylight
In August, the average length of the day is 13h and 28min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:59 pm. On the last day of August, in Mercer, Tennessee, sunrise is at 6:28 am and sunset at 7:24 pm CDT.
Sunshine
In Mercer, the average sunshine in August is 10.4h.UV index
The average daily maximum UV index in August is 6. 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: In August, the maximum UV index of 6 suggests this advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Mercer, TN
- Average high temperature in August: 87.4°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45.7°F).
- Average low temperature in August: 69.1°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in August
Mercer, TN
- Average pressure in August: 29.98"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
Mercer, 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
Mercer, 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
Mercer, TN
- Average rainfall in August: 1.38"
The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in August
Mercer, TN
- Average rainfall days in August: 11.3 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (7.1 days).
Average snowfall in August
Mercer, TN
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Mercer, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.2 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
Mercer, TN
- Average daylight in August: 13h and 30min
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 24min
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
Mercer, TN
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in August
Mercer, TN
- Average UV index in August: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Mercer, TN
- Average cloud cover in August: 28
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in August
Mercer, 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).
