Chardon, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.8 °F (low) to 57.9 °F (high). Annual precipitation averages 49.5 Inches. Chardon is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.0 °F | 32.3 °F | 3.99 in. |
| February | 17.4 °F | 35.1 °F | 2.83 in. |
| March | 25.1 °F | 44.0 °F | 3.53 in. |
| April | 36.0 °F | 57.3 °F | 4.03 in. |
| May | 46.7 °F | 68.5 °F | 4.25 in. |
| June | 56.0 °F | 77.2 °F | 4.4 in. |
| July | 59.9 °F | 80.8 °F | 4.79 in. |
| August | 58.1 °F | 79.5 °F | 4.21 in. |
| September | 51.7 °F | 73.5 °F | 4.52 in. |
| October | 41.4 °F | 60.9 °F | 4.55 in. |
| November | 32.2 °F | 48.0 °F | 4.25 in. |
| December | 23.9 °F | 37.3 °F | 4.14 in. |
| Annual | 38.8 °F | 57.9 °F | 49.49 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Dfb - Humid Continental Mild Summer, Wet All Year |