Average annual temperature is 11.9 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: -21.8 °C
Number of sunny days: 203 days
Number of rainy days: 140 days
Number of snow days: 22 days
Look at detailed online map of Knoxville
* Weather data for Knoxville United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.0 | 14.3 | 22.2 | 28.1 | 30.6 | 32.6 | 34.9 | 36.4 | 34.0 | 31.7 | 19.1 | 14.7 |
| Average daytime temperature (°C) | 1.4 | 5.6 | 8.5 | 17.7 | 24.8 | 29.1 | 28.6 | 28.4 | 26.6 | 18.4 | 11.0 | 7.1 |
| Average temperature (°C) | -2.7 | -0.8 | 2.8 | 10.9 | 18.5 | 23.3 | 23.6 | 23.7 | 20.9 | 13.6 | 5.8 | 3.0 |
| Average night temperature (°C) | -5.7 | -5.5 | -1.5 | 5.5 | 12.5 | 17.7 | 18.8 | 19.6 | 16.0 | 9.6 | 1.6 | -0.3 |
| Absolute minimum temperature (°C) | -21.8 | -21.0 | -12.4 | -3.4 | 2.9 | 10.1 | 13.5 | 13.7 | 11.0 | -3.0 | -10.3 | -6.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.8 | 7.3 | 7.1 | 9.7 | 11.7 | 12.2 | 12.3 | 11.4 | 10.6 | 7.7 | 7.1 | 4.6 |
| Precipitation (mm) | 53 | 65 | 67 | 31 | 58 | 43 | 191 | 116 | 36 | 84 | 14 | 53 |
| Sunny days | 15 | 17 | 15 | 17 | 20 | 17 | 15 | 16 | 16 | 17 | 23 | 15 |
| Rainy days | 6 | 8 | 15 | 12 | 11 | 13 | 16 | 15 | 14 | 13 | 5 | 12 |
| Snow days | 10 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 4 |
The best time to visit Knoxville during the most sunny months:
The largest precipitation sum in Knoxville is at