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July Weather in Knoxville, United States

Last updated: June 24, 2025

In Knoxville, United States, the average temperature in July hovers around 27°C (or 80°F), creating a warm and inviting atmosphere. However, you can expect temperature fluctuations, with lows dipping to 15°C (60°F) and highs soaring up to 38°C (100°F). Rainfall can be expected, with an average precipitation of 77 mm (3.0 in) spread over 11 days, while the humidity levels remain moderately high at around 75%. This weather makes for a unique experience in Knoxville during July!

July Temperature in Knoxville

In July in Knoxville, the average temperature is 27°C (80°F). The maximum can reach 38°C (100°F) and the minimum can be as low as 15°C (60°F). This makes Knoxville an ideal destination for travelers who enjoy warm weather and sunshine.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec394353586876807874624945
Data source: Temperature data for Knoxville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Knoxville

In Knoxville in July, the precipitation amount is 77 mm (3.0 in) over the course of 11 days.

July Precipitation Trends in Knoxville

The chart displays monthly precipitation patterns in Knoxville, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Knoxville, July typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec101142156154213114771167210796110
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Knoxville

In Knoxville in July humidity is 75%. With an average temperature of 27°C (80°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit more challenging, as every step can leave you feeling sticky and in need of frequent hydration breaks.

July Average Humidity in Knoxville

This chart illustrates the average monthly humidity levels in Knoxville, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Knoxville is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Knoxville

In Knoxville in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Knoxville.

Maximum UV Index Levels in Knoxville for July

The chart shows the monthly maximum UV Index (UVI) for Knoxville in July, 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 July, the maximum UV index in Knoxville typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Knoxville July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)101 mm (4.0 inches)82%moderate
February Weather6°C (43°F)142 mm (5.6 inches)79%high
March Weather11°C (53°F)156 mm (6.1 inches)77%very high
April Weather15°C (59°F)154 mm (6.1 inches)78%very high
May Weather20°C (69°F)213 mm (8.4 inches)82%extreme
June Weather25°C (77°F)114 mm (4.5 inches)81%extreme
July Weather27°C (80°F)77 mm (3.0 inches)75%extreme
August Weather26°C (78°F)116 mm (4.6 inches)61%very high
September Weather24°C (75°F)72 mm (2.8 inches)59%very high
October Weather17°C (62°F)107 mm (4.2 inches)69%high
November Weather9°C (49°F)96 mm (3.8 inches)82%moderate
December Weather7°C (45°F)110 mm (4.3 inches)87%moderate

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