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July Weather in Knoxville, United States

Last updated: June 24, 2025

In July, the average temperature in Knoxville, United States hovers around 21°C (71°F). During this time, temperatures can dip as low as 10°C (50°F) or rise as high as 33°C (92°F). Expect some moisture as well, with 124 mm (4.9 in) of precipitation spread over 14 days. The air tends to be quite humid, with an average humidity of 74%.

July Temperature in Knoxville

In July in Knoxville, the average temperature is 21°C (71°F). Maximum can reach 33°C (92°F) and minimum can be as low as 10°C (50°F). This climate offers travelers a comfortable range of temperatures, making it an ideal time for outdoor activities and exploration.

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 21°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834455765716962523731
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 124 mm (4.9 in) over a span of 14 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 124 mm (4.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6784751091169512479891197880
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 74%. With an average temperature of 21°C (71°F), this humidity feels like traveling through a warm, damp blanket, making outdoor excursions feel sticky and a bit stifling, often prompting the need for frequent breaks to stay refreshed.

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 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%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 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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 Weather-4°C (25°F)67 mm (2.6 inches)89%moderate
February Weather-2°C (28°F)84 mm (3.3 inches)90%moderate
March Weather1°C (35°F)75 mm (2.9 inches)89%high
April Weather7°C (46°F)109 mm (4.3 inches)88%very high
May Weather14°C (57°F)116 mm (4.6 inches)80%very high
June Weather19°C (66°F)95 mm (3.7 inches)79%very high
July Weather21°C (71°F)124 mm (4.9 inches)74%very high
August Weather20°C (69°F)79 mm (3.1 inches)64%very high
September Weather17°C (62°F)89 mm (3.5 inches)67%very high
October Weather11°C (52°F)119 mm (4.7 inches)81%high
November Weather3°C (38°F)78 mm (3.1 inches)89%moderate
December Weather-1°C (31°F)80 mm (3.2 inches)88%low

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