Valley City, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.8 °F (low) to 59.9 °F (high). Annual precipitation averages 41.1 Inches. Valley City 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.8 °F | 34.2 °F | 2.92 in. |
| February | 20.9 °F | 36.8 °F | 2.34 in. |
| March | 28.7 °F | 46.0 °F | 3.14 in. |
| April | 39.4 °F | 59.5 °F | 3.78 in. |
| May | 50.1 °F | 70.5 °F | 4.15 in. |
| June | 59.6 °F | 79.3 °F | 4.01 in. |
| July | 63.4 °F | 83.0 °F | 3.95 in. |
| August | 61.6 °F | 81.5 °F | 3.66 in. |
| September | 54.4 °F | 75.2 °F | 3.86 in. |
| October | 43.8 °F | 63.0 °F | 3.41 in. |
| November | 34.3 °F | 50.4 °F | 3.0 in. |
| December | 25.8 °F | 39.0 °F | 2.84 in. |
| Annual | 41.8 °F | 59.9 °F | 41.06 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |