August weather forecast
Alcoa, TN

August in Alcoa signals the gradual wind down of summer but maintains high temperatures. While the days remain hot, the promise of the impending autumn is subtly felt. Of note, the city sees the least wind speed, averaging around 3.6mph (5.8km/h). Evenings start getting cooler, setting the perfect ambiance for outdoor BBQs and sunset viewings. In essence, August seamlessly merges the summer excitement with the upcoming tranquility of fall.

Temperature

The arrival of August brings an average high-temperature of a still tropical 86.7°F (30.4°C), closely following the temperature pattern of July. Alcoa's daily high temperature significantly diverges from the consistently recorded temperature low averaging a refreshing 64.4°F (18°C) in August.

Heat index

The heat index for August is evaluated at a fiery hot 98.6°F (37°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The least humid month in Alcoa is August, with an average relative humidity of 72%.

Rainfall

In Alcoa, Tennessee, in August, it is raining for 14.4 days, with typically 1.42" (36mm) of accumulated precipitation. In Alcoa, during the entire year, the rain falls for 148.2 days and collects up to 18.23" (463mm) of precipitation.

Snowfall

April through September are months without snowfall in Alcoa.

Daylight

The average length of the day in August in Alcoa is 13h and 28min.
On the first day of the month, sunrise is at 6:44 am and sunset at 8:40 pm. On the last day of August, sunrise is at 7:07 am and sunset at 8:04 pm EDT.

Sunshine

In Alcoa, the average sunshine in August is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Alcoa. 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 transforms into these recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.