Greensboro, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.4 °C (low) to 20.8 °C (high). Annual precipitation averages 1165.4 Millimeters. Greensboro 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 | -1.3 °C | 9.6 °C | 92.96 mm |
| February | 0.1 °C | 11.7 °C | 75.18 mm |
| March | 3.8 °C | 15.9 °C | 98.04 mm |
| April | 8.8 °C | 21.3 °C | 98.3 mm |
| May | 13.8 °C | 25.2 °C | 97.54 mm |
| June | 18.2 °C | 29.2 °C | 111.51 mm |
| July | 20.4 °C | 31 °C | 111 mm |
| August | 19.6 °C | 30 °C | 101.6 mm |
| September | 16.2 °C | 26.8 °C | 118.62 mm |
| October | 9.5 °C | 21.6 °C | 85.34 mm |
| November | 3.7 °C | 15.9 °C | 84.84 mm |
| December | 0.4 °C | 11.2 °C | 90.42 mm |
| Annual | 9.4 °C | 20.8 °C | 1165.35 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |