August weather forecast
Sewanee, TN

August continues to ride the high summer heat in Sewanee. Although the temperatures start showing a minor decline, the overall warmth is still significant. Precipitation registers an uptick, causing increased cloud cover. Despite higher rainfall, the relative humidity remains steady. August retains the warm climatic trend of July, with an impressive mean high temperature lingering at 84.7°F (29.3°C).

Temperature

With the start of August, Sewanee measures an average high-temperature of a still moderately hot 84.7°F (29.3°C), not significantly differing from July's 85.6°F (29.8°C). During the month of August, the temperature generally drops to a low average of 65.1°F (18.4°C).

Heat index

August's mean heat index is appraised at a fiery hot 95°F (35°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. 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. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in August in Sewanee is 78%.

Rainfall

In Sewanee, in August, during 20.5 rainfall days, 4.65" (118mm) of precipitation is typically accumulated. Throughout the year, in Sewanee, there are 191.9 rainfall days, and 48.15" (1223mm) of precipitation is accumulated.

Snowfall

In Sewanee, Tennessee, snow does not fall in May through September.

Daylight

In Sewanee, the average length of the day in August is 13h and 26min.
On the first day of the month, sunrise is at 5:53 am and sunset at 7:46 pm. On the last day of August, in Sewanee, sunrise is at 6:16 am and sunset at 7:11 pm CDT.

Sunshine

In August, the average sunshine is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Deflect overexposure. Sun protection is a necessity. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.