Mount Airy, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.7 °F (low) to 68.7 °F (high). Annual precipitation averages 50.5 Inches. Mount Airy is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.0 °F | 48.2 °F | 3.99 in. |
| February | 28.9 °F | 51.9 °F | 3.17 in. |
| March | 35.2 °F | 59.6 °F | 4.22 in. |
| April | 43.9 °F | 69.6 °F | 4.29 in. |
| May | 53.3 °F | 76.8 °F | 4.65 in. |
| June | 61.6 °F | 83.9 °F | 4.78 in. |
| July | 65.7 °F | 87.2 °F | 5.21 in. |
| August | 64.5 °F | 85.7 °F | 4.9 in. |
| September | 58.0 °F | 80.1 °F | 4.27 in. |
| October | 45.5 °F | 70.5 °F | 3.46 in. |
| November | 35.1 °F | 60.0 °F | 3.38 in. |
| December | 29.7 °F | 51.0 °F | 4.21 in. |
| Annual | 45.7 °F | 68.7 °F | 50.53 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |