New Deal, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 19.8 °C (high). Annual precipitation averages 1367.3 Millimeters. New Deal 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.8 °C | 6.8 °C | 107.7 mm |
| February | -1.1 °C | 9.4 °C | 116.08 mm |
| March | 3.3 °C | 14.4 °C | 126.49 mm |
| April | 8.3 °C | 20.3 °C | 127 mm |
| May | 14.2 °C | 24.7 °C | 144.02 mm |
| June | 18.3 °C | 28.9 °C | 115.32 mm |
| July | 20 °C | 30.7 °C | 119.13 mm |
| August | 19.3 °C | 30.6 °C | 94.49 mm |
| September | 15.5 °C | 27.3 °C | 97.03 mm |
| October | 9.2 °C | 21.3 °C | 95 mm |
| November | 3.4 °C | 14.3 °C | 97.54 mm |
| December | -0.2 °C | 8.8 °C | 127.51 mm |
| Annual | 9 °C | 19.8 °C | 1367.31 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |