New Richmond, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.1 °F (low) to 65.9 °F (high). Annual precipitation averages 43.7 Inches. New Richmond 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 | 23.6 °F | 40.9 °F | 3.06 in. |
| February | 25.9 °F | 45.2 °F | 2.79 in. |
| March | 32.5 °F | 54.7 °F | 4.08 in. |
| April | 42.1 °F | 67.0 °F | 4.33 in. |
| May | 52.3 °F | 75.7 °F | 4.95 in. |
| June | 61.4 °F | 83.8 °F | 4.24 in. |
| July | 65.5 °F | 87.2 °F | 4.71 in. |
| August | 64.0 °F | 86.4 °F | 3.22 in. |
| September | 55.8 °F | 80.8 °F | 2.88 in. |
| October | 44.0 °F | 68.9 °F | 2.93 in. |
| November | 33.7 °F | 55.5 °F | 3.11 in. |
| December | 28.3 °F | 45.1 °F | 3.36 in. |
| Annual | 44.1 °F | 65.9 °F | 43.66 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 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |