Pelham, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.6 °F (low) to 69.1 °F (high). Annual precipitation averages 58.4 Inches. Pelham is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 28.7 °F | 47.9 °F | 4.98 in. |
| February | 31.2 °F | 52.0 °F | 5.13 in. |
| March | 38.0 °F | 60.6 °F | 5.6 in. |
| April | 46.3 °F | 69.9 °F | 5.48 in. |
| May | 55.7 °F | 77.3 °F | 4.64 in. |
| June | 63.5 °F | 83.9 °F | 5.29 in. |
| July | 67.1 °F | 87.0 °F | 4.96 in. |
| August | 65.7 °F | 86.6 °F | 4.23 in. |
| September | 59.2 °F | 81.6 °F | 4.18 in. |
| October | 47.1 °F | 71.5 °F | 3.3 in. |
| November | 36.8 °F | 60.1 °F | 4.32 in. |
| December | 31.8 °F | 51.2 °F | 6.33 in. |
| Annual | 47.6 °F | 69.1 °F | 58.44 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |