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Knoxville Weather by Month
Average temperatures, rainfall and humidity for Knoxville, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Knoxville month looks like before you travel — then check the live Knoxville forecast for the days ahead.
Warmest month
July
31°C average high
Coolest month
January
0°C average low
Wettest month
August
101 mm of rain
Driest month
November
49 mm of rain
Average temperature and rainfall in Knoxville by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 8°C | 0°C | -18°C / 23°C | 69 mm | 74% | 10 km/h |
| February | 12°C | 2°C | -23°C / 26°C | 84 mm | 71% | 11 km/h |
| March | 17°C | 6°C | -10°C / 29°C | 80 mm | 65% | 11 km/h |
| April | 22°C | 10°C | -2°C / 32°C | 75 mm | 65% | 11 km/h |
| May | 26°C | 15°C | 2°C / 33°C | 67 mm | 72% | 9 km/h |
| June | 29°C | 19°C | 10°C / 36°C | 82 mm | 75% | 8 km/h |
| July | 31°C | 21°C | 13°C / 36°C | 74 mm | 77% | 8 km/h |
| August | 30°C | 20°C | 12°C / 36°C | 101 mm | 78% | 7 km/h |
| September | 28°C | 17°C | 7°C / 37°C | 56 mm | 77% | 7 km/h |
| October | 22°C | 11°C | -4°C / 35°C | 59 mm | 76% | 8 km/h |
| November | 15°C | 5°C | -9°C / 28°C | 49 mm | 73% | 8 km/h |
| December | 12°C | 3°C | -16°C / 24°C | 86 mm | 77% | 9 km/h |
Best time to visit Knoxville
The most comfortable time to visit Knoxville is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around August, totalling about 880 mm a year.
Travellers who prefer heat should aim for July, when highs average 31°C. August is the month to avoid if rain would spoil your plans — it averages 101 mm, roughly 2× the rainfall of the driest month (November).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Knoxville forecast for what is happening now.
Weather across United States right now
- Atlanta16°C
- Austin26°C
- Baltimore13°C
- Boston13°C
- Brooklyn14°C
- Chicago16°C
- Dallas24°C
- Denver19°C
- Detroit13°C
- Houston25°C
- Indianapolis15°C
- Las Vegas22°C
- Los Angeles17°C
- Miami25°C
- Minneapolis19°C
- New York14°C
- Orlando21°C
- Philadelphia13°C
- Phoenix27°C
- Pittsburgh12°C
- Portland15°C
- Queens14°C
- Riverside19°C
- Sacramento16°C
- San Antonio26°C
- San Diego20°C
- San Francisco16°C
- San Jose16°C
- Seattle14°C
- St. Louis18°C
- Tampa21°C
- Washington12°C
