New Vienna, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.2 °F (low) to 62.1 °F (high). Annual precipitation averages 44.8 Inches. New Vienna is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.4 °F | 36.8 °F | 3.29 in. |
| February | 23.6 °F | 40.4 °F | 2.86 in. |
| March | 31.6 °F | 50.3 °F | 3.98 in. |
| April | 41.6 °F | 62.8 °F | 4.58 in. |
| May | 52.8 °F | 72.3 °F | 4.81 in. |
| June | 61.3 °F | 80.7 °F | 4.73 in. |
| July | 63.9 °F | 83.4 °F | 4.34 in. |
| August | 61.9 °F | 82.5 °F | 3.49 in. |
| September | 54.9 °F | 77.5 °F | 3.16 in. |
| October | 44.2 °F | 65.2 °F | 3.09 in. |
| November | 34.1 °F | 52.3 °F | 3.1 in. |
| December | 26.5 °F | 40.9 °F | 3.4 in. |
| Annual | 43.2 °F | 62.1 °F | 44.83 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°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 |