Blaine, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.5 °F (low) to 69.6 °F (high). Annual precipitation averages 50.3 Inches. Blaine 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 | 47.4 °F | 4.68 in. |
| February | 31.0 °F | 51.9 °F | 4.7 in. |
| March | 37.4 °F | 61.0 °F | 4.84 in. |
| April | 45.7 °F | 70.6 °F | 4.71 in. |
| May | 55.3 °F | 78.4 °F | 3.8 in. |
| June | 63.4 °F | 85.1 °F | 4.2 in. |
| July | 67.3 °F | 87.9 °F | 5.02 in. |
| August | 66.1 °F | 87.5 °F | 3.16 in. |
| September | 60.2 °F | 82.5 °F | 3.45 in. |
| October | 47.8 °F | 71.7 °F | 2.8 in. |
| November | 36.2 °F | 59.9 °F | 3.74 in. |
| December | 31.4 °F | 50.7 °F | 5.19 in. |
| Annual | 47.5 °F | 69.6 °F | 50.29 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 |