Cookeville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.7 °C (low) to 20.3 °C (high). Annual precipitation averages 1518.9 Millimeters. Cookeville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3 °C | 7.9 °C | 129.29 mm |
| February | -1.6 °C | 10.4 °C | 135.13 mm |
| March | 2.1 °C | 15.1 °C | 138.68 mm |
| April | 6.7 °C | 20.7 °C | 135.13 mm |
| May | 12.2 °C | 25.1 °C | 132.33 mm |
| June | 16.7 °C | 28.8 °C | 140.72 mm |
| July | 18.9 °C | 30.6 °C | 138.18 mm |
| August | 18 °C | 30.3 °C | 112.78 mm |
| September | 14.3 °C | 27.4 °C | 110.49 mm |
| October | 7.6 °C | 21.8 °C | 83.82 mm |
| November | 1.9 °C | 15.2 °C | 108.46 mm |
| December | -1 °C | 10 °C | 153.92 mm |
| Annual | 7.7 °C | 20.3 °C | 1518.93 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |