Fallston, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 21.3 °C (high). Annual precipitation averages 1273.3 Millimeters. Fallston is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.6 °C | 10.2 °C | 106.68 mm |
| February | -0.2 °C | 12.5 °C | 87.38 mm |
| March | 3.3 °C | 16.7 °C | 115.82 mm |
| April | 8.1 °C | 21.7 °C | 109.98 mm |
| May | 13.1 °C | 25.7 °C | 105.66 mm |
| June | 17.6 °C | 29.4 °C | 112.78 mm |
| July | 19.7 °C | 31.3 °C | 114.81 mm |
| August | 19.1 °C | 30.3 °C | 116.59 mm |
| September | 15.7 °C | 27.4 °C | 105.41 mm |
| October | 8.8 °C | 22.1 °C | 90.17 mm |
| November | 2.8 °C | 16.5 °C | 96.77 mm |
| December | -0.2 °C | 11.6 °C | 111.25 mm |
| Annual | 8.9 °C | 21.3 °C | 1273.3 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |