Marion, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.3 °F (low) to 64.7 °F (high). Annual precipitation averages 45.5 Inches. Marion is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.8 °F | 43.2 °F | 3.82 in. |
| February | 25.1 °F | 47.0 °F | 3.26 in. |
| March | 31.3 °F | 55.4 °F | 3.91 in. |
| April | 39.7 °F | 65.1 °F | 4.05 in. |
| May | 48.5 °F | 73.2 °F | 4.75 in. |
| June | 57.1 °F | 79.8 °F | 4.57 in. |
| July | 60.8 °F | 82.9 °F | 4.16 in. |
| August | 59.6 °F | 82.2 °F | 4.17 in. |
| September | 53.0 °F | 77.1 °F | 3.14 in. |
| October | 40.3 °F | 67.1 °F | 2.91 in. |
| November | 30.8 °F | 56.5 °F | 2.95 in. |
| December | 26.0 °F | 46.9 °F | 3.84 in. |
| Annual | 41.3 °F | 64.7 °F | 45.53 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |