ClimateForecastNovemberDecember >>

Knoxville (TN) Climate by Month

The temperature in Knoxville can vary greatly throughout the year. The temperatures shift from very warm to cold. It also has a notably wet climate with much precipitation. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

Depending on the time of the year, temperatures range from very warm to chilly in Knoxville. Average daytime temperatures range from a very warm 31°C in August, the warmest time of the year, to a chilly 8°C during cooler months like January. At night, temperatures typically average around -2°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Knoxville has a relatively rain/snowy climate with high precipitation levels, averaging 1312 mm of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 147 mm of precipitation, spread over 13 rainy days. In contrast, October experiences a drier climate, with about 79 mm of rainfall spread across 9 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Knoxville. While June receives considerable daily sunshine with up to 9.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.2 hours of sunlight per day.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Knoxville in the United States of America

During the months of April, May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Knoxville?
    August has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Knoxville?
    The coldest month is January with an average maximum temperature of 8°C.
  • Which is the wettest month in Knoxville?
    December tops the wettest month list with 147 mm of rainfall.
  • Which is the driest month in Knoxville?
    October is the driest month with 79 mm of precipitation.
  • Which is the sunniest month in Knoxville?
    June is the sunniest month with an average of 290 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Knoxville (TN)

    Fri   Nov 22
    9°C | 2°C
    W 22 km/h
    0.6 mm
    broken clouds and slight rain

    broken clouds and slight rain

    Sat   Nov 23
    11°C | 4°C
    NW 7 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Nov 24
    15°C | 2°C
    SW 11 km/h
    almost clear and no rain

    almost clear and no rain