Morrison, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.2 °F (low) to 69 °F (high). Annual precipitation averages 56.3 Inches. Morrison is located in USDA Plant Hardiness Zone 7b. 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 | 28.1 °F | 47.6 °F | 4.96 in. |
| February | 30.7 °F | 51.7 °F | 4.92 in. |
| March | 37.4 °F | 60.4 °F | 5.32 in. |
| April | 45.8 °F | 69.8 °F | 5.18 in. |
| May | 55.2 °F | 77.2 °F | 4.75 in. |
| June | 63.3 °F | 84.0 °F | 5.18 in. |
| July | 67.0 °F | 86.9 °F | 4.51 in. |
| August | 65.4 °F | 86.4 °F | 4.26 in. |
| September | 58.8 °F | 81.5 °F | 3.98 in. |
| October | 46.6 °F | 71.3 °F | 3.11 in. |
| November | 36.2 °F | 59.9 °F | 4.09 in. |
| December | 31.4 °F | 51.0 °F | 5.99 in. |
| Annual | 47.2 °F | 69 °F | 56.25 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |