La Grange, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.4 °F (low) to 71.7 °F (high). Annual precipitation averages 56.6 Inches. La Grange 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 | 29.8 °F | 49.7 °F | 4.52 in. |
| February | 32.7 °F | 54.3 °F | 4.89 in. |
| March | 39.9 °F | 62.9 °F | 5.64 in. |
| April | 48.3 °F | 72.5 °F | 5.72 in. |
| May | 58.0 °F | 80.0 °F | 5.38 in. |
| June | 65.9 °F | 87.3 °F | 4.62 in. |
| July | 69.4 °F | 90.2 °F | 4.62 in. |
| August | 67.7 °F | 90.1 °F | 3.41 in. |
| September | 60.7 °F | 84.9 °F | 3.9 in. |
| October | 48.6 °F | 74.4 °F | 4.14 in. |
| November | 38.6 °F | 62.1 °F | 4.12 in. |
| December | 32.7 °F | 52.4 °F | 5.68 in. |
| Annual | 49.4 °F | 71.7 °F | 56.64 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 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |