Tullahoma, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.6 °C (low) to 20.4 °C (high). Annual precipitation averages 1512.3 Millimeters. Tullahoma 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 | -1.9 °C | 8.6 °C | 136.14 mm |
| February | -0.7 °C | 10.9 °C | 132.59 mm |
| March | 3.2 °C | 15.7 °C | 148.08 mm |
| April | 8 °C | 20.8 °C | 141.99 mm |
| May | 13.1 °C | 24.9 °C | 116.33 mm |
| June | 17.6 °C | 28.8 °C | 139.7 mm |
| July | 19.6 °C | 30.4 °C | 118.62 mm |
| August | 18.8 °C | 30.3 °C | 101.35 mm |
| September | 15.1 °C | 27.4 °C | 111.76 mm |
| October | 8.4 °C | 21.9 °C | 91.69 mm |
| November | 2.6 °C | 15.3 °C | 105.92 mm |
| December | -0.2 °C | 10.3 °C | 168.15 mm |
| Annual | 8.6 °C | 20.4 °C | 1512.32 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |