Falmouth, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 18.7 °C (high). Annual precipitation averages 1138.2 Millimeters. Falmouth 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 | -5.5 °C | 5.1 °C | 81.03 mm |
| February | -4.2 °C | 7.4 °C | 74.42 mm |
| March | -0.3 °C | 12.7 °C | 107.95 mm |
| April | 4.9 °C | 19.2 °C | 109.73 mm |
| May | 10.8 °C | 24 °C | 119.63 mm |
| June | 15.6 °C | 28.4 °C | 118.87 mm |
| July | 18.3 °C | 30.4 °C | 119.38 mm |
| August | 17 °C | 29.8 °C | 81.53 mm |
| September | 13.1 °C | 26.9 °C | 81.28 mm |
| October | 6.6 °C | 20.4 °C | 77.72 mm |
| November | 0.6 °C | 13.1 °C | 78.23 mm |
| December | -2.9 °C | 7.5 °C | 88.39 mm |
| Annual | 6.2 °C | 18.7 °C | 1138.16 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |