Salem, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.8 °F (low) to 69.9 °F (high). Annual precipitation averages 51.9 Inches. Salem is located in USDA Plant Hardiness Zone 7b. 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 | 27.9 °F | 49.9 °F | 4.32 in. |
| February | 30.3 °F | 53.9 °F | 3.66 in. |
| March | 36.9 °F | 61.3 °F | 4.38 in. |
| April | 45.4 °F | 70.8 °F | 4.35 in. |
| May | 54.4 °F | 78.2 °F | 4.35 in. |
| June | 62.4 °F | 84.8 °F | 4.77 in. |
| July | 66.3 °F | 88.1 °F | 4.52 in. |
| August | 65.2 °F | 86.3 °F | 4.71 in. |
| September | 58.9 °F | 80.7 °F | 4.69 in. |
| October | 46.8 °F | 71.4 °F | 3.76 in. |
| November | 36.0 °F | 61.3 °F | 3.73 in. |
| December | 30.5 °F | 52.6 °F | 4.68 in. |
| Annual | 46.8 °F | 69.9 °F | 51.92 in. |
| 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |