Falling Water, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 21.6 °C (high). Annual precipitation averages 1514.6 Millimeters. Falling Water is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.2 °C | 9.8 °C | 144.02 mm |
| February | 0.4 °C | 12.1 °C | 132.59 mm |
| March | 3.9 °C | 17 °C | 146.56 mm |
| April | 8.5 °C | 22.3 °C | 128.27 mm |
| May | 13.7 °C | 26.3 °C | 114.55 mm |
| June | 18.2 °C | 30 °C | 117.86 mm |
| July | 20.3 °C | 31.6 °C | 130.05 mm |
| August | 19.7 °C | 31.5 °C | 99.57 mm |
| September | 16.1 °C | 28.7 °C | 122.68 mm |
| October | 9.3 °C | 22.8 °C | 92.2 mm |
| November | 2.9 °C | 16.3 °C | 128.27 mm |
| December | 0.3 °C | 11.2 °C | 157.99 mm |
| Annual | 9.3 °C | 21.6 °C | 1514.61 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |