Celina, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.2 °C (low) to 20.9 °C (high). Annual precipitation averages 1359.2 Millimeters. Celina is located in USDA Plant Hardiness Zone 7a. 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 | -3.8 °C | 8 °C | 115.06 mm |
| February | -2.2 °C | 10.8 °C | 118.11 mm |
| March | 1.1 °C | 15.4 °C | 125.48 mm |
| April | 6.1 °C | 21.4 °C | 126.24 mm |
| May | 11.7 °C | 25.9 °C | 118.36 mm |
| June | 16.4 °C | 29.7 °C | 124.97 mm |
| July | 18.7 °C | 31.5 °C | 133.1 mm |
| August | 17.8 °C | 31.2 °C | 90.17 mm |
| September | 14.1 °C | 28.3 °C | 89.92 mm |
| October | 6.8 °C | 22.5 °C | 80.26 mm |
| November | 1.6 °C | 15.7 °C | 98.04 mm |
| December | -1.7 °C | 9.9 °C | 139.45 mm |
| Annual | 7.2 °C | 20.9 °C | 1359.16 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |