Petros, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.7 °F (low) to 67.4 °F (high). Annual precipitation averages 68.4 Inches. Petros 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 | 26.0 °F | 45.3 °F | 6.45 in. |
| February | 29.4 °F | 49.8 °F | 5.84 in. |
| March | 35.9 °F | 58.7 °F | 6.39 in. |
| April | 44.6 °F | 68.7 °F | 5.71 in. |
| May | 53.5 °F | 76.4 °F | 5.12 in. |
| June | 61.0 °F | 82.5 °F | 5.67 in. |
| July | 65.1 °F | 85.5 °F | 6.13 in. |
| August | 63.8 °F | 85.3 °F | 4.89 in. |
| September | 57.6 °F | 80.1 °F | 4.96 in. |
| October | 45.8 °F | 69.6 °F | 3.73 in. |
| November | 35.7 °F | 57.8 °F | 5.43 in. |
| December | 30.4 °F | 48.5 °F | 8.07 in. |
| Annual | 45.7 °F | 67.4 °F | 68.39 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |