August Weather in Knoxville, United States

Last updated: June 24, 2025

In Knoxville, United States, the average temperature in August is a pleasant 23°C (74°F). Expect minimums of 12°C (54°F) and maximums reaching up to 35°C (95°F). During this month, anticipate 67 mm (2.6 in) of precipitation spread over 8 days, with an average humidity level of 77%. Enjoy the warm weather, but don’t forget your umbrella! 🌦️

August Temperature in Knoxville

In August in Knoxville, the average temperature is 23°C (74°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 12°C (54°F). This makes Knoxville an ideal destination for travelers looking for warm weather with a comfortable range of temperatures.

August Weather in Knoxville: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Knoxville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Knoxville, August typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Knoxville generated using information from the Copernicus Climate Change Service.

August Precipitation in Knoxville

In Knoxville in August, the total precipitation amount is 67 mm (2.6 in) over the course of 8 days.

August Precipitation Trends in Knoxville

The chart displays monthly precipitation patterns in Knoxville, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Knoxville, August typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Knoxville

In Knoxville in August, humidity is 77%. With an average temperature of 23°C (74°F), this humidity feels like being enveloped in a warm, sticky blanket, making travel somewhat uncomfortable and requiring frequent hydration breaks to enjoy the sights without feeling overheated.

August Average Humidity in Knoxville

This chart illustrates the average monthly humidity levels in Knoxville, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Knoxville is approximately 77%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Knoxville

In Knoxville in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Knoxville.

Maximum UV Index Levels in Knoxville for August

The chart shows the monthly maximum UV Index (UVI) for Knoxville in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Knoxville typically reaches 9, which falls under the very high exposure category.

Data source: Knoxville August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in Knoxville Compares to Other Months

Weather in Knoxville varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Knoxville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Knoxville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	57 mm (2.2 inches)	81%	moderate
February Weather	-2°C (28°F)	65 mm (2.6 inches)	81%	moderate
March Weather	5°C (41°F)	105 mm (4.1 inches)	81%	high
April Weather	10°C (50°F)	111 mm (4.4 inches)	82%	very high
May Weather	17°C (63°F)	160 mm (6.3 inches)	78%	very high
June Weather	23°C (74°F)	152 mm (6.0 inches)	81%	extreme
July Weather	25°C (77°F)	108 mm (4.2 inches)	79%	very high
August Weather	23°C (74°F)	67 mm (2.6 inches)	77%	very high
September Weather	20°C (69°F)	99 mm (3.9 inches)	78%	very high
October Weather	13°C (55°F)	126 mm (5.0 inches)	78%	high
November Weather	4°C (40°F)	52 mm (2.1 inches)	87%	moderate
December Weather	1°C (33°F)	50 mm (2.0 inches)	84%	low