Howland Center, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.1 °F (low) to 60.6 °F (high). Annual precipitation averages 41.3 Inches. Howland Center is located in USDA Plant Hardiness Zone 6a. 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 | 18.2 °F | 35.0 °F | 3.01 in. |
| February | 18.9 °F | 37.8 °F | 2.28 in. |
| March | 26.5 °F | 47.2 °F | 3.09 in. |
| April | 36.5 °F | 60.7 °F | 3.77 in. |
| May | 46.8 °F | 71.5 °F | 3.89 in. |
| June | 55.9 °F | 79.7 °F | 4.15 in. |
| July | 60.0 °F | 83.6 °F | 4.46 in. |
| August | 58.0 °F | 82.1 °F | 3.47 in. |
| September | 51.6 °F | 75.7 °F | 3.96 in. |
| October | 40.6 °F | 63.2 °F | 3.36 in. |
| November | 32.0 °F | 50.7 °F | 2.9 in. |
| December | 24.5 °F | 39.7 °F | 3.0 in. |
| Annual | 39.1 °F | 60.6 °F | 41.34 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°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 |