Lillington, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 22.4 °C (high). Annual precipitation averages 1201.4 Millimeters. Lillington 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 | -1.1 °C | 11.4 °C | 88.14 mm |
| February | 0 °C | 13.6 °C | 76.2 mm |
| March | 3.7 °C | 17.7 °C | 93.22 mm |
| April | 8.6 °C | 22.9 °C | 85.6 mm |
| May | 14.1 °C | 26.9 °C | 91.95 mm |
| June | 18.6 °C | 30.6 °C | 118.11 mm |
| July | 21.2 °C | 32.4 °C | 145.54 mm |
| August | 20.2 °C | 31.4 °C | 125.48 mm |
| September | 16.9 °C | 28.4 °C | 127 mm |
| October | 9.6 °C | 23.1 °C | 85.34 mm |
| November | 3.5 °C | 17.6 °C | 80.77 mm |
| December | 0.6 °C | 13.2 °C | 84.07 mm |
| Annual | 9.7 °C | 22.4 °C | 1201.42 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 |