Fort Thomas, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45 °F (low) to 64.5 °F (high). Annual precipitation averages 44.4 Inches. Fort Thomas is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.0 °F | 39.0 °F | 3.26 in. |
| February | 25.3 °F | 43.3 °F | 2.88 in. |
| March | 33.3 °F | 52.9 °F | 4.06 in. |
| April | 43.8 °F | 65.5 °F | 4.35 in. |
| May | 54.1 °F | 74.5 °F | 4.81 in. |
| June | 63.0 °F | 83.4 °F | 4.44 in. |
| July | 66.1 °F | 86.1 °F | 4.05 in. |
| August | 64.6 °F | 85.5 °F | 3.56 in. |
| September | 57.5 °F | 79.1 °F | 3.04 in. |
| October | 45.9 °F | 67.7 °F | 3.1 in. |
| November | 35.3 °F | 53.7 °F | 3.3 in. |
| December | 28.1 °F | 43.2 °F | 3.55 in. |
| Annual | 45 °F | 64.5 °F | 44.4 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |