Blaine, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 41.9 °F (low) to 67.4 °F (high). Annual precipitation averages 46.8 Inches. Blaine is located in USDA Plant Hardiness Zone 6b. 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 | 22.3 °F | 44.0 °F | 3.61 in. |
| February | 24.2 °F | 48.0 °F | 3.21 in. |
| March | 30.3 °F | 57.7 °F | 4.38 in. |
| April | 39.7 °F | 69.7 °F | 4.05 in. |
| May | 50.1 °F | 76.9 °F | 4.95 in. |
| June | 58.8 °F | 83.5 °F | 4.47 in. |
| July | 63.2 °F | 86.9 °F | 5.53 in. |
| August | 61.8 °F | 86.1 °F | 3.35 in. |
| September | 54.2 °F | 80.6 °F | 3.39 in. |
| October | 41.2 °F | 69.8 °F | 2.85 in. |
| November | 30.7 °F | 57.7 °F | 3.1 in. |
| December | 25.8 °F | 47.7 °F | 3.88 in. |
| Annual | 41.9 °F | 67.4 °F | 46.77 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |