Chattanooga
Tennessee, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Chattanooga, TN

A stunning aerial panorama of the area of Chattanooga, Tennessee, a distant white skyline in the horizon and mountains
A stunning aerial panorama of the area of Chattanooga, Tennessee, a distant white skyline in the horizon and mountains
The last month of the summer, Agosto, is another hot month in Chattanooga, Tennessee, with average temperature varying between 89.6°F (32°C) and 69.3°F (20.7°C).

Temperature

In Agosto, the average high-temperature is practically the same as in Julio - a still tropical 89.6°F (32°C). In Chattanooga, Tennessee, the average low-temperature is 69.3°F (20.7°C).

Heat index

In Agosto, the average heat index is evaluated at a scorching 108.9°F (42.7°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like metabolic differences, differences in body mass, height, and shape, clothing, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Chattanooga, the average relative humidity is 76%.

Rainfall

In Chattanooga, during 9.4 rainfall days, 3.48" (88.4mm) of precipitation is typically accumulated. Throughout the year, there are 119.6 rainfall days, and 52.48" (1332.9mm) of precipitation is accumulated.

Snowfall

In Chattanooga snow does not fall in Mayo through Noviembre.

Daylight

In Agosto, the average length of the day in Chattanooga is 13.4h.

Sunshine

The average sunshine in Chattanooga, Tennessee, is 8.3h.

UV index

In Chattanooga, the average daily maximum UV index in Agosto is 9. A UV Index reading of 8 to 10 represents a very high health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 9 in Agosto transform into the following instructions:
Take extra precautions. Protection against sun damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the temperature in Agosto in Chattanooga?

In Agosto, in Chattanooga, the average high-temperature is 89.6°F (32°C), and the average low-temperature is 69.3°F (20.7°C). In Agosto, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that represents influence of the relative humidity to air temperaure, is calculated to 108.9°F (42.7°C).

What is the average humidity in Agosto in Chattanooga?

In Agosto, the average relative humidity in Chattanooga is 76%.

How much does it rain in Chattanooga in Agosto?

In Chattanooga, Tennessee, in Agosto, it is raining for 9.4 days, with typically 3.48" (88.4mm) of accumulated precipitation.

When it does not snow in Chattanooga?

Mayo through Noviembre are months without snowfall in Chattanooga.

How many hours of daylight does Chattanooga have in Agosto?

In Agosto, the average length of the day is 13.4h.

How long on average sun shines in Agosto in Chattanooga?

In Chattanooga, Tennessee, the average sunshine in Agosto is 8.3h.

What is the UV index intensity in Agosto in Chattanooga?

In Chattanooga, the average daily maximum UV index in Agosto is 9. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in August - Chattanooga, TN
  • Average high temperature in August: 89.6°F

The warmest month (with the highest average high temperature) is July (90.2°F).
The month with the lowest average high temperature is January (50.2°F).

  • Average low temperature in August: 69.2°F

The month with the highest average low temperature is July (69.7°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

Average humidity in August - Chattanooga, TN
  • Average humidity in August: 76%

The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is April (63.8%).

Average rainfall in August - Chattanooga, TN
  • Average rainfall in August: 3.5"

Wettest months (with the highest rainfall) are March and November (5").
The driest month (with the lowest rainfall) is October (3.3").

Average rainfall days in August - Chattanooga, TN
  • Average rainfall days in August: 9.4 days

The month with the highest number of rainy days is July (11.7 days).
The month with the lowest number of rainy days is October (7.7 days).

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

The month with the highest snowfall is January (1.7").
Months with the lowest snowfall are May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (1 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Chattanooga, TN
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in August: 8.3h

The month with most sunshine is June (Average sunshine: 9.2h).
The month with least sunshine is December (Average sunshine: 4.5h).

Average UV index in August - Chattanooga, TN
  • Average UV index in August: 9

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).