Malvern, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.3 °F (low) to 60.9 °F (high). Annual precipitation averages 41.5 Inches. Malvern is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.9 °F | 35.1 °F | 3.05 in. |
| February | 21.1 °F | 38.1 °F | 2.29 in. |
| March | 28.7 °F | 47.8 °F | 3.21 in. |
| April | 39.1 °F | 61.4 °F | 3.66 in. |
| May | 49.6 °F | 71.6 °F | 4.05 in. |
| June | 58.5 °F | 79.8 °F | 4.68 in. |
| July | 62.5 °F | 83.5 °F | 4.33 in. |
| August | 60.7 °F | 82.2 °F | 3.71 in. |
| September | 53.8 °F | 76.0 °F | 3.53 in. |
| October | 42.7 °F | 64.0 °F | 3.15 in. |
| November | 33.2 °F | 50.8 °F | 2.88 in. |
| December | 25.6 °F | 40.0 °F | 2.97 in. |
| Annual | 41.3 °F | 60.9 °F | 41.51 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |