Zanesville, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.9 °F (low) to 60.4 °F (high). Annual precipitation averages 40 Inches. Zanesville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.9 °F | 32.8 °F | 2.6 in. |
| February | 19.9 °F | 36.4 °F | 2.13 in. |
| March | 28.3 °F | 47.4 °F | 2.69 in. |
| April | 39.0 °F | 60.6 °F | 3.88 in. |
| May | 50.1 °F | 71.8 °F | 4.58 in. |
| June | 60.0 °F | 80.8 °F | 4.48 in. |
| July | 63.2 °F | 84.1 °F | 4.24 in. |
| August | 60.9 °F | 82.3 °F | 3.89 in. |
| September | 53.3 °F | 76.6 °F | 3.08 in. |
| October | 42.4 °F | 64.1 °F | 2.93 in. |
| November | 32.3 °F | 49.7 °F | 3.05 in. |
| December | 23.6 °F | 37.8 °F | 2.44 in. |
| Annual | 40.9 °F | 60.4 °F | 39.99 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |