Rocky Mount, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 21.8 °C (high). Annual precipitation averages 1208.5 Millimeters. Rocky Mount is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.6 °C | 10.9 °C | 90.42 mm |
| February | 0.3 °C | 12.7 °C | 71.88 mm |
| March | 3.8 °C | 16.7 °C | 101.6 mm |
| April | 8.9 °C | 21.9 °C | 87.38 mm |
| May | 14.2 °C | 25.9 °C | 87.63 mm |
| June | 18.9 °C | 30 °C | 110.24 mm |
| July | 21.2 °C | 31.9 °C | 125.98 mm |
| August | 20.3 °C | 30.7 °C | 130.81 mm |
| September | 16.9 °C | 27.7 °C | 151.13 mm |
| October | 10.1 °C | 22.6 °C | 86.36 mm |
| November | 4.2 °C | 17.3 °C | 80.26 mm |
| December | 1.1 °C | 12.7 °C | 84.84 mm |
| Annual | 9.9 °C | 21.8 °C | 1208.53 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |