Russellville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 17.8 °C (high). Annual precipitation averages 1224.8 Millimeters. Russellville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 4.2 °C | 84.33 mm |
| February | -4.2 °C | 6.6 °C | 80.52 mm |
| March | 0 °C | 11.7 °C | 114.55 mm |
| April | 5.4 °C | 18.2 °C | 119.89 mm |
| May | 11.2 °C | 23 °C | 131.32 mm |
| June | 15.9 °C | 27.7 °C | 123.95 mm |
| July | 17.7 °C | 29.6 °C | 133.1 mm |
| August | 16.8 °C | 28.9 °C | 90.17 mm |
| September | 12.8 °C | 25.8 °C | 85.85 mm |
| October | 6.3 °C | 19.3 °C | 83.57 mm |
| November | 0.9 °C | 12 °C | 82.55 mm |
| December | -2.8 °C | 6.5 °C | 95 mm |
| Annual | 6.2 °C | 17.8 °C | 1224.8 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 |