Girard, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.6 °F (low) to 61.1 °F (high). Annual precipitation averages 41 Inches. Girard 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 | 18.8 °F | 35.4 °F | 2.94 in. |
| February | 19.5 °F | 38.3 °F | 2.24 in. |
| March | 27.0 °F | 47.7 °F | 3.03 in. |
| April | 37.0 °F | 61.4 °F | 3.75 in. |
| May | 47.1 °F | 72.1 °F | 3.84 in. |
| June | 56.2 °F | 80.2 °F | 4.31 in. |
| July | 60.4 °F | 84.1 °F | 4.45 in. |
| August | 58.5 °F | 82.6 °F | 3.51 in. |
| September | 51.9 °F | 76.3 °F | 3.89 in. |
| October | 41.1 °F | 63.8 °F | 3.24 in. |
| November | 32.5 °F | 51.0 °F | 2.82 in. |
| December | 25.0 °F | 40.1 °F | 2.95 in. |
| Annual | 39.6 °F | 61.1 °F | 40.97 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 |