Big Clifty, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.2 °F (low) to 66.9 °F (high). Annual precipitation averages 51.6 Inches. Big Clifty is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.7 °F | 42.9 °F | 3.73 in. |
| February | 27.2 °F | 47.5 °F | 3.98 in. |
| March | 34.3 °F | 56.8 °F | 4.89 in. |
| April | 43.9 °F | 67.7 °F | 4.97 in. |
| May | 54.2 °F | 76.2 °F | 5.52 in. |
| June | 62.3 °F | 83.9 °F | 4.63 in. |
| July | 66.2 °F | 86.9 °F | 4.58 in. |
| August | 63.9 °F | 86.2 °F | 3.53 in. |
| September | 56.8 °F | 80.8 °F | 3.64 in. |
| October | 45.4 °F | 69.9 °F | 3.81 in. |
| November | 34.7 °F | 56.9 °F | 3.71 in. |
| December | 29.0 °F | 46.9 °F | 4.57 in. |
| Annual | 45.2 °F | 66.9 °F | 51.56 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |