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Knoxville weather in September (Tennessee, United States of America)

Curious about the September weather in Knoxville? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In September, Knoxville generally has high temperatures and high rainfall. Throughout the daytime, temperatures often hover around 28°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 16°C.

Knoxville in September usually receives high rainfall, averaging around 120 mm for the month. Based on our climate data of the past 30 years, about 9 days of rain are anticipated.

The city usually sees around 233 hours of sunlight, indicating many sunny days.

If your ideal day consists of dry skies and moderate temperatures May and October generally stand out with the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Knoxville climate page with graphs.

 

Knoxville, monthly averages in September

Min TemperatureMin Temperature 16°C  
Max TemperatureMax Temperature 28°C  
Chance of RainChance of Rain 31%  
PrecipitationPrecipitation 120 mm  
Rainy daysRainy days 9 days  
HumidityHumidity 76%  
SunshineSunshine 233 hours  
Percentage SunshinePercentage Sunshine 62%  

Where to go in the United States of America in September

Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Knoxville in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Knoxville.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.