Salem, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.3 °F (low) to 67.6 °F (high). Annual precipitation averages 44.4 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 | 27.4 °F | 46.0 °F | 3.29 in. |
| February | 29.3 °F | 49.9 °F | 2.78 in. |
| March | 35.7 °F | 58.2 °F | 3.68 in. |
| April | 44.8 °F | 68.9 °F | 3.75 in. |
| May | 53.9 °F | 76.4 °F | 4.51 in. |
| June | 62.2 °F | 83.4 °F | 4.59 in. |
| July | 66.4 °F | 87.0 °F | 4.22 in. |
| August | 64.9 °F | 85.3 °F | 3.5 in. |
| September | 58.4 °F | 79.3 °F | 4.43 in. |
| October | 46.6 °F | 69.3 °F | 3.27 in. |
| November | 36.1 °F | 58.7 °F | 3.06 in. |
| December | 30.3 °F | 49.2 °F | 3.35 in. |
| Annual | 46.3 °F | 67.6 °F | 44.43 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 |