Selmer, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.2 °F (low) to 71.4 °F (high). Annual precipitation averages 58.2 Inches. Selmer 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 | 29.5 °F | 49.3 °F | 4.55 in. |
| February | 32.5 °F | 54.0 °F | 5.23 in. |
| March | 39.6 °F | 62.8 °F | 5.68 in. |
| April | 48.1 °F | 72.5 °F | 5.63 in. |
| May | 57.8 °F | 80.0 °F | 5.43 in. |
| June | 65.8 °F | 87.0 °F | 4.55 in. |
| July | 69.2 °F | 90.2 °F | 4.94 in. |
| August | 67.7 °F | 89.7 °F | 3.86 in. |
| September | 60.6 °F | 84.3 °F | 4.23 in. |
| October | 48.6 °F | 73.6 °F | 4.11 in. |
| November | 38.3 °F | 61.8 °F | 4.4 in. |
| December | 32.6 °F | 52.0 °F | 5.59 in. |
| Annual | 49.2 °F | 71.4 °F | 58.2 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |