Steubenville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.2 °F (low) to 62.3 °F (high). Annual precipitation averages 42.3 Inches. Steubenville 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 | 21.3 °F | 37.6 °F | 3.27 in. |
| February | 22.7 °F | 40.6 °F | 2.52 in. |
| March | 29.8 °F | 50.1 °F | 3.28 in. |
| April | 40.2 °F | 63.4 °F | 3.68 in. |
| May | 50.0 °F | 72.8 °F | 4.03 in. |
| June | 58.9 °F | 80.4 °F | 4.65 in. |
| July | 63.0 °F | 83.7 °F | 4.21 in. |
| August | 61.5 °F | 82.8 °F | 3.58 in. |
| September | 54.8 °F | 76.8 °F | 3.69 in. |
| October | 43.4 °F | 64.9 °F | 3.17 in. |
| November | 33.9 °F | 52.5 °F | 3.01 in. |
| December | 26.7 °F | 41.9 °F | 3.17 in. |
| Annual | 42.2 °F | 62.3 °F | 42.26 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 |