Fairfield, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.3 °C (low) to 22.1 °C (high). Annual precipitation averages 1406.4 Millimeters. Fairfield is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1 °C | 11.7 °C | 102.87 mm |
| February | 1.7 °C | 13.4 °C | 83.31 mm |
| March | 4.7 °C | 16.9 °C | 91.44 mm |
| April | 9.7 °C | 22 °C | 86.87 mm |
| May | 14.9 °C | 25.9 °C | 108.71 mm |
| June | 19.3 °C | 29.6 °C | 127.25 mm |
| July | 21.6 °C | 31.6 °C | 147.07 mm |
| August | 20.8 °C | 30.6 °C | 178.82 mm |
| September | 18.3 °C | 28 °C | 182.12 mm |
| October | 13.1 °C | 23.4 °C | 103.38 mm |
| November | 7.4 °C | 18.2 °C | 97.79 mm |
| December | 3.6 °C | 13.7 °C | 96.77 mm |
| Annual | 11.3 °C | 22.1 °C | 1406.4 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |