The best times to visit Knoxville for ideal weather are
April 16th to May 27th
September 10th to October 21st
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Knoxville Travel Guide
Other Knoxville Travel Info
Weather in Knoxville
Average temperatures in Knoxville vary drastically. Considering humidity, temperatures feel nice some of the year, but often too hot in the summer and cold in the winter with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 17th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Knoxville, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 90.1°F (32.3°C) with temperatures rarely dropping below 68.7°F (20.4°C) at night.
Knoxville Temperatures (Fahrenheit)
Knoxville Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Knoxville Perceived Temperature (F)
Knoxville Perceived Temperature (C)
Average Knoxville Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Knoxville are September, August, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late August. For example, on the week of August 20th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid July with an average of 3 days of significant precipitation the week of July 9th.
When can you find snow in Knoxville? Weather stations report a good amount of seasonal snow likely to be deepest around February, especially close to late January. The best time to ski (if at all) in Knoxville is often around around January 15th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Knoxville.
Snow on the Ground
The graph below shows the average snow on the ground in Knoxville (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Knoxville has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is April (49.7% relative humidity), and the most humid month is December (65.9%).
Wind in Knoxville is usually calm. The windiest month is February, followed by April and March. February’s average wind speed of around 6.5 knots (7.4 MPH or 12 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early April where average top sustained speeds reach 15.5 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Knoxville.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.7||Light breeze||12.6||Significant breeze|
|Feb||6.5||Light breeze||14||Significant breeze|
|Mar||6.1||Light breeze||13.7||Significant breeze|
|Apr||6.2||Light breeze||14.3||Significant breeze|
|May||5||Light breeze||12.6||Significant breeze|
|Jun||4.7||Light breeze||13||Significant breeze|
|Jul||4.7||Light breeze||12||Significant breeze|
|Aug||3.7||Barely noticeable||10.1||Gentle breeze|
|Sep||3.6||Barely noticeable||9.7||Significant breeze|
|Oct||4.3||Light breeze||10.6||Gentle breeze|
|Nov||4.4||Light breeze||11.1||Significant breeze|
|Dec||4.8||Light breeze||11.7||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Knoxville?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Knoxville, TN, US is October, followed by February and July. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Knoxville in November. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Knoxville Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 86.5°F (30.3°C) and 56.2°F (13.4°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 9 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 6 to 10 days of precipitation per month. June – August is fairly slow season for tourism in Knoxville, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 87.3°F (30.7°C) and 58.1°F (14.5°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 5 to 7 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.
Winter (December through February)
Weather is too cold this time of year in Knoxville to be enjoyable for warm weather travelers. The average high during this season is between 56.6°F (13.7°C) and 49.1°F (9.5°C). On average, it rains or snows a fair amount: 7 to 10 times per month. These times of year are the second busiest with tourists.