Average annual temperature is 11.6 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -10.5 °C
Number of sunny days: 162 days
Number of rainy days: 189 days
Number of snow days: 14 days
Look at detailed online map of Knox County
* Weather data for Knox County 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) | 16.1 | 20.1 | 19.5 | 25.9 | 28.9 | 32.1 | 32.3 | 32.2 | 31.3 | 27.7 | 18.5 | 15.4 |
| Average daytime temperature (°C) | 5.9 | 10.2 | 9.7 | 17.2 | 21.4 | 25.2 | 28.1 | 26.8 | 24.3 | 17.6 | 10.7 | 8.0 |
| Average temperature (°C) | 2.0 | 3.3 | 3.9 | 10.7 | 14.9 | 19.2 | 22.7 | 21.0 | 18.6 | 12.8 | 5.4 | 4.1 |
| Average night temperature (°C) | -1.1 | -1.2 | -0.4 | 5.2 | 9.1 | 13.8 | 18.0 | 16.3 | 13.9 | 8.9 | 1.6 | 1.5 |
| Absolute minimum temperature (°C) | -8.9 | -10.5 | -8.0 | -2.3 | 1.4 | 8.8 | 14.1 | 10.6 | 7.8 | -1.4 | -7.5 | -4.7 |
| 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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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) | 3.1 | 6.8 | 7.0 | 8.8 | 10.1 | 10.9 | 11.5 | 10.7 | 8.8 | 6.6 | 6.9 | 4.2 |
| Precipitation (mm) | 128 | 50 | 132 | 122 | 78 | 123 | 83 | 101 | 22 | 71 | 47 | 56 |
| Sunny days | 9 | 16 | 13 | 15 | 20 | 14 | 4 | 12 | 17 | 12 | 20 | 10 |
| Rainy days | 17 | 11 | 14 | 15 | 11 | 16 | 27 | 19 | 13 | 19 | 8 | 19 |
| Snow days | 5 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Knox County during the most sunny months:
The largest precipitation sum in Knox County is at