Dunlap, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.5 °C (low) to 21.5 °C (high). Annual precipitation averages 1564.1 Millimeters. Dunlap 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1 °C | 9.6 °C | 144.02 mm |
| February | 0.6 °C | 12.1 °C | 131.57 mm |
| March | 4.2 °C | 16.9 °C | 159.26 mm |
| April | 8.7 °C | 22.3 °C | 149.61 mm |
| May | 13.8 °C | 26.1 °C | 117.86 mm |
| June | 18.2 °C | 29.7 °C | 124.71 mm |
| July | 20.3 °C | 31.2 °C | 157.99 mm |
| August | 19.7 °C | 31.3 °C | 100.58 mm |
| September | 16.2 °C | 28.6 °C | 102.62 mm |
| October | 9.6 °C | 22.7 °C | 94.74 mm |
| November | 3.4 °C | 16.2 °C | 118.36 mm |
| December | 0.6 °C | 11.1 °C | 162.81 mm |
| Annual | 9.5 °C | 21.5 °C | 1564.13 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |