Ada, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.7 °F (low) to 60.1 °F (high). Annual precipitation averages 39.2 Inches. Ada is located in USDA Plant Hardiness Zone 6a. 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 | 18.8 °F | 33.3 °F | 2.74 in. |
| February | 20.5 °F | 36.5 °F | 2.24 in. |
| March | 29.0 °F | 46.9 °F | 2.79 in. |
| April | 39.5 °F | 60.4 °F | 3.82 in. |
| May | 50.9 °F | 71.3 °F | 4.15 in. |
| June | 60.5 °F | 80.0 °F | 4.33 in. |
| July | 63.5 °F | 83.4 °F | 4.15 in. |
| August | 61.7 °F | 81.8 °F | 3.49 in. |
| September | 54.4 °F | 76.3 °F | 3.07 in. |
| October | 43.4 °F | 63.7 °F | 2.8 in. |
| November | 33.1 °F | 49.8 °F | 2.9 in. |
| December | 24.6 °F | 38.2 °F | 2.68 in. |
| Annual | 41.7 °F | 60.1 °F | 39.16 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 6a : -10°F to -5°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 |