Knoxville weather live forecast

Today's maximum temperature in Knoxville is expected to be 28°C. Select a day from the live weather forecast for Knoxville, Tennessee, USA for more weather parameters.

Tuesday
22nd Sep
28

19

3

3
Wednesday
23rd Sep
26

17

3

4
Thursday
24th Sep
26

16

4

3
Friday
25th Sep
26

14

7

4
Saturday
26th Sep
26

12

12

7

5-day weather forecast updated at 04:01 on Tuesday 22nd September 2026 GMT

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The 5-day weather forecast for Tennessee (Knoxville) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Knoxville weather forecast by day

Below are the detailed weather forecasts for Knoxville for the next 5 days.

Knoxville weather for Tuesday 22nd September 2026

Expect isolated thunderstorms in Knoxville, Tennessee with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 83% chance of some rain and little or no wind of 5 kph from the north.

28
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
3
UV index (Moderate)
83
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
5
kph wind from N

Knoxville weather for Wednesday 23rd September 2026

Expect isolated thunderstorms in Knoxville, Tennessee with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and little or no wind of 6 kph from the north-east.

26
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
86
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
6
kph wind from NE

Knoxville weather for Thursday 24th September 2026

Expect isolated thunderstorms in Knoxville, Tennessee with a maximum temperature of 26°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a light breeze of 8 kph from the north-east.

26
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
3
UV index (Moderate)
52
% chance of some rain
<5
mm of rainfall expected
26
°C wind chill
8
kph wind from NE

Knoxville weather for Friday 25th September 2026

Expect scattered clouds in Knoxville, Tennessee with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-east.

26
°C maximum temperature
14
°C minimum temperature
scattered clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from NE

Knoxville weather for Saturday 26th September 2026

Expect scattered clouds in Knoxville, Tennessee with a maximum temperature of 26°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north-east.