Clifton, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.1 °C (low) to 21.8 °C (high). Annual precipitation averages 1464.3 Millimeters. Clifton is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.8 °C | 9.4 °C | 125.48 mm |
| February | 0 °C | 12.4 °C | 132.59 mm |
| March | 3.7 °C | 17.3 °C | 136.91 mm |
| April | 8.3 °C | 22.4 °C | 140.46 mm |
| May | 13.9 °C | 26.3 °C | 133.35 mm |
| June | 18.4 °C | 30.2 °C | 117.35 mm |
| July | 20.3 °C | 31.9 °C | 124.71 mm |
| August | 19.4 °C | 31.7 °C | 100.58 mm |
| September | 15.5 °C | 28.8 °C | 103.89 mm |
| October | 8.5 °C | 23.3 °C | 98.3 mm |
| November | 2.8 °C | 16.6 °C | 107.19 mm |
| December | -0.2 °C | 11 °C | 143.51 mm |
| Annual | 9.1 °C | 21.8 °C | 1464.32 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |