Knoxville Climate by Month
Knoxville, Tennessee, United States
Hot summers and cold winters, with rain spread through the year.
The climate in Knoxville is one of hot summers and cold winters, with rain spread through the year. Expect highs of 90°F (32°C) in July and 49°F (9°C) in January, with the coldest nights (January) near 29°F (-2°C). It gets 49 in (1236 mm) of rain a year, spread across the months.
- Warmest month
- 90°F(32°C)
- Average high, July
- Coldest nights
- 29°F(-2°C)
- Average low, January
- Rain per year
- 49 in(1236 mm)
- No clear rainy season
- Humidity
- 67%
- Sunniest: July
Best and worst months in Knoxville
Best for weatherOctober is the best time for weather in Knoxville: highs near 74°F (23°C) and about 2.6 in (67 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 49°F (9°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Knoxville weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(9°C) | 29°F(-2°C) | 4.0 in(102 mm) | 75% | 2.2 |
| FebFebruary | 54°F(12°C) | 32°F(0°C) | 3.9 in(99 mm) | 64% | 2.8 |
| MarMarch | 63°F(17°C) | 38°F(3°C) | 4.7 in(119 mm) | 64% | 4.0 |
| AprApril | 73°F(23°C) | 46°F(8°C) | 4.2 in(107 mm) | 58% | 5.0 |
| MayMay | 81°F(27°C) | 55°F(13°C) | 4.1 in(104 mm) | 69% | 5.7 |
| JunJune | 87°F(31°C) | 64°F(18°C) | 4.2 in(106 mm) | 67% | 5.8 |
| JulJuly | 90°F(32°C) | 67°F(20°C) | 5.0 in(128 mm) | 69% | 5.8 |
| AugAugust | 89°F(32°C) | 66°F(19°C) | 3.8 in(96 mm) | 68% | 5.5 |
| SepSeptember | 84°F(29°C) | 60°F(15°C) | 3.5 in(89 mm) | 67% | 4.6 |
| OctOctoberBest | 74°F(23°C) | 47°F(9°C) | 2.6 in(67 mm) | 66% | 3.5 |
| NovNovember | 62°F(16°C) | 36°F(2°C) | 3.9 in(99 mm) | 68% | 2.5 |
| DecDecember | 52°F(11°C) | 31°F(-1°C) | 4.7 in(120 mm) | 68% | 1.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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