Prospect, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 21.5 °C (high). Annual precipitation averages 1504.4 Millimeters. Prospect is located in USDA Plant Hardiness Zone 7b. 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 | -1.5 °C | 9.4 °C | 136.65 mm |
| February | -0.1 °C | 11.9 °C | 137.92 mm |
| March | 3.8 °C | 16.7 °C | 143.26 mm |
| April | 8.4 °C | 21.8 °C | 139.45 mm |
| May | 13.8 °C | 26.1 °C | 121.16 mm |
| June | 17.9 °C | 29.8 °C | 112.01 mm |
| July | 20 °C | 31.6 °C | 129.29 mm |
| August | 19.1 °C | 31.3 °C | 110.49 mm |
| September | 15.4 °C | 28.7 °C | 105.66 mm |
| October | 8.8 °C | 23.1 °C | 95.25 mm |
| November | 2.8 °C | 16.3 °C | 107.95 mm |
| December | 0 °C | 11.2 °C | 165.35 mm |
| Annual | 9 °C | 21.5 °C | 1504.44 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 7b : -15°C to -12.2°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 |