Howard, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.6 °F (low) to 60.9 °F (high). Annual precipitation averages 42 Inches. Howard 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.2 °F | 35.2 °F | 3.19 in. |
| February | 19.8 °F | 38.3 °F | 2.49 in. |
| March | 27.6 °F | 48.3 °F | 3.33 in. |
| April | 37.8 °F | 61.7 °F | 3.93 in. |
| May | 48.4 °F | 71.4 °F | 4.38 in. |
| June | 57.5 °F | 79.8 °F | 4.86 in. |
| July | 60.9 °F | 83.2 °F | 4.12 in. |
| August | 59.1 °F | 82.2 °F | 3.49 in. |
| September | 51.4 °F | 76.1 °F | 3.25 in. |
| October | 40.0 °F | 64.0 °F | 2.9 in. |
| November | 31.0 °F | 51.0 °F | 2.95 in. |
| December | 23.8 °F | 39.8 °F | 3.12 in. |
| Annual | 39.6 °F | 60.9 °F | 42.01 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |