Richmond Dale, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 18.1 °C (high). Annual precipitation averages 1096 Millimeters. Richmond Dale is located in USDA Plant Hardiness Zone 6b. 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 | -5.6 °C | 4.2 °C | 81.03 mm |
| February | -4.7 °C | 6.2 °C | 77.22 mm |
| March | -0.7 °C | 11.7 °C | 99.31 mm |
| April | 4.9 °C | 18.8 °C | 101.6 mm |
| May | 10.9 °C | 23.9 °C | 112.01 mm |
| June | 15.9 °C | 28.3 °C | 112.52 mm |
| July | 17.7 °C | 29.8 °C | 108.97 mm |
| August | 16.6 °C | 29.4 °C | 85.6 mm |
| September | 12.4 °C | 26.2 °C | 83.06 mm |
| October | 5.9 °C | 19.6 °C | 76.96 mm |
| November | 0.3 °C | 12.5 °C | 73.66 mm |
| December | -2.8 °C | 6.6 °C | 84.07 mm |
| Annual | 5.9 °C | 18.1 °C | 1096.01 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |