Rockbridge, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.5 °F (low) to 63.2 °F (high). Annual precipitation averages 42.4 Inches. Rockbridge 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 | 20.4 °F | 38.1 °F | 3.31 in. |
| February | 22.0 °F | 41.4 °F | 2.74 in. |
| March | 29.5 °F | 51.3 °F | 3.66 in. |
| April | 39.7 °F | 64.4 °F | 3.98 in. |
| May | 50.4 °F | 73.4 °F | 4.15 in. |
| June | 59.3 °F | 81.5 °F | 4.34 in. |
| July | 62.9 °F | 84.5 °F | 4.29 in. |
| August | 60.9 °F | 83.6 °F | 3.67 in. |
| September | 53.3 °F | 77.9 °F | 3.17 in. |
| October | 41.6 °F | 66.1 °F | 2.93 in. |
| November | 32.0 °F | 53.3 °F | 2.93 in. |
| December | 25.7 °F | 42.5 °F | 3.19 in. |
| Annual | 41.5 °F | 63.2 °F | 42.36 in. |
| 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 : -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 |