Arlington, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.8 °F (low) to 68.8 °F (high). Annual precipitation averages 52.2 Inches. Arlington is located in USDA Plant Hardiness Zone 7a. 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 | 26.9 °F | 44.1 °F | 3.88 in. |
| February | 29.9 °F | 49.0 °F | 4.11 in. |
| March | 37.9 °F | 58.8 °F | 4.89 in. |
| April | 47.4 °F | 69.9 °F | 5.31 in. |
| May | 57.7 °F | 78.7 °F | 5.38 in. |
| June | 65.8 °F | 86.6 °F | 4.16 in. |
| July | 69.1 °F | 89.5 °F | 4.25 in. |
| August | 66.6 °F | 88.4 °F | 3.2 in. |
| September | 58.7 °F | 82.6 °F | 3.58 in. |
| October | 46.9 °F | 72.1 °F | 4.16 in. |
| November | 36.9 °F | 58.3 °F | 4.47 in. |
| December | 29.9 °F | 47.7 °F | 4.77 in. |
| Annual | 47.8 °F | 68.8 °F | 52.16 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |