Milan, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.2 °F (low) to 70.3 °F (high). Annual precipitation averages 56.2 Inches. Milan 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 | 27.7 °F | 47.4 °F | 4.13 in. |
| February | 30.9 °F | 52.0 °F | 4.74 in. |
| March | 38.5 °F | 61.1 °F | 5.5 in. |
| April | 47.6 °F | 71.4 °F | 5.14 in. |
| May | 57.5 °F | 79.4 °F | 6.12 in. |
| June | 65.5 °F | 86.5 °F | 4.39 in. |
| July | 69.0 °F | 89.5 °F | 4.33 in. |
| August | 67.0 °F | 89.3 °F | 3.66 in. |
| September | 59.5 °F | 83.6 °F | 4.1 in. |
| October | 47.3 °F | 73.0 °F | 3.82 in. |
| November | 37.4 °F | 60.5 °F | 4.8 in. |
| December | 30.9 °F | 50.3 °F | 5.42 in. |
| Annual | 48.2 °F | 70.3 °F | 56.15 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 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |