Our verdict
The best time to visit Knoxville is May
The warmest month of the year in Knoxville is July, where the average temperature gets to around 31℃ (88℉), but temperatures can reach as high as 34℃ (93℉) on the hottest days in summer. The weather at night in the winter, which is around January-time, can get down to a minimum of -7℃ (20℉).
The longest days between sunrise and sunset in Knoxville are usually in July, so if you want to get the most out of your daytime activities, be sure to plan your visit around this time. February sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in August instead.
Below you’ll find loads more detailed information about when to visit Knoxville, including a monthly climate breakdown, what to pack, and loads of tools and recommendations to help you find flights and accommodation to suit your budget.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Knoxville seasons
Before you continue, it’s important to know when the seasons are in Knoxville as they might be different to yours depending on where in the world you’re travelling from. Knoxville is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Knoxville
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Knoxville for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Knoxville climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Knoxville for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Knoxville in January
- Average temperature: 3℃ (37℉)
- Average high temperature: 7℃ (45℉)
- Average low temperature: -1℃ (30℉)
- Average humidity: 76%
- Average sunny days: 17 days
- Average rainfall: 63mm (2") over 11 days
- Average snow days: 4 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Knoxville in February
- Average temperature: 5℃ (41℉)
- Average high temperature: 10℃ (50℉)
- Average low temperature: 1℃ (34℉)
- Average humidity: 78%
- Average sunny days: 14 days
- Average rainfall: 93mm (4") over 11 days
- Average snow days: 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Knoxville in March
- Average temperature: 9℃ (49℉)
- Average high temperature: 15℃ (58℉)
- Average low temperature: 5℃ (40℉)
- Average humidity: 77%
- Average sunny days: 14 days
- Average rainfall: 64mm (3") over 14 days
- Average snow days: 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Knoxville in April
- Average temperature: 15℃ (59℉)
- Average high temperature: 21℃ (69℉)
- Average low temperature: 9℃ (48℉)
- Average humidity: 74%
- Average sunny days: 14 days
- Average rainfall: 71mm (3") over 14 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in April, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
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Knoxville in May
- Average temperature: 20℃ (67℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 13℃ (56℉)
- Average humidity: 74%
- Average sunny days: 14 days
- Average rainfall: 54mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in May, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Knoxville in June
- Average temperature: 23℃ (74℉)
- Average high temperature: 30℃ (86℉)
- Average low temperature: 17℃ (63℉)
- Average humidity: 72%
- Average sunny days: 15 days
- Average rainfall: 59mm (2") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Knoxville in July
- Average temperature: 25℃ (77℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 19℃ (66℉)
- Average humidity: 71%
- Average sunny days: 14 days
- Average rainfall: 63mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Knoxville in August
- Average temperature: 24℃ (76℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 18℃ (65℉)
- Average humidity: 70%
- Average sunny days: 16 days
- Average rainfall: 38mm (2") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Knoxville in September
- Average temperature: 21℃ (70℉)
- Average high temperature: 28℃ (82℉)
- Average low temperature: 16℃ (60℉)
- Average humidity: 72%
- Average sunny days: 17 days
- Average rainfall: 38mm (2") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in September, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
Knoxville in October
- Average temperature: 15℃ (58℉)
- Average high temperature: 21℃ (70℉)
- Average low temperature: 9℃ (49℉)
- Average humidity: 74%
- Average sunny days: 20 days
- Average rainfall: 53mm (2") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in October, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
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Knoxville in November
- Average temperature: 9℃ (48℉)
- Average high temperature: 14℃ (57℉)
- Average low temperature: 4℃ (39℉)
- Average humidity: 74%
- Average sunny days: 20 days
- Average rainfall: 54mm (2") over 8 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Knoxville in December
- Average temperature: 6℃ (42℉)
- Average high temperature: 9℃ (49℉)
- Average low temperature: 2℃ (35℉)
- Average humidity: 78%
- Average sunny days: 17 days
- Average rainfall: 78mm (3") over 12 days
- Average snow days: 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Knoxville in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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