August weather forecast
Smyrna, TN

Weather-wise, August follows July's example, maintaining the peak summer heat but with slightly shorter days. As the sun’s trajectory begins to lower, the town experiences a gradual, almost imperceptible decline in temperatures. Nonetheless, the humidity tends to elevate during August, leading to a sticky, sometimes stifling, atmosphere. The cloud coverage remains relatively low, allowing the sun’s rays to filter through in most parts of the day. But with a relatively high rainfall of 2.4" (61mm), even the peak summer could offer the surprising pleasantness of an occasional rainy day.

Temperature

The commencement of August introduces an average high-temperature of a still tropical 88°F (31.1°C), closely mirroring the preceding month. Throughout August, the nighttime temperature averages to an agreeable 68.2°F (20.1°C).

Heat index

For most parts of August, the heat index is computed to be a fiery hot 102.2°F (39°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. 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 relevant to children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. 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. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

June, August and October, with an average relative humidity of 73%, are the least humid months.

Rainfall

In August, in Smyrna, Tennessee, the rain falls for 16.4 days. Throughout August, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Smyrna, there are 150.1 rainfall days, and 24.41" (620mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Smyrna.

Daylight

In Smyrna, the average length of the day in August is 13h and 29min.
On the first day of August in Smyrna, Tennessee, sunrise is at 5:54 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:14 pm CDT.

Sunshine

In Smyrna, Tennessee, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 6 during August translates into the following directions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.