Prospect, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.6 °F (low) to 60.6 °F (high). Annual precipitation averages 40 Inches. Prospect is located in USDA Plant Hardiness Zone 6a. 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 | 19.2 °F | 34.1 °F | 2.76 in. |
| February | 20.9 °F | 37.1 °F | 2.15 in. |
| March | 29.2 °F | 47.7 °F | 2.92 in. |
| April | 39.7 °F | 61.1 °F | 3.89 in. |
| May | 50.8 °F | 71.9 °F | 4.12 in. |
| June | 60.3 °F | 80.3 °F | 4.72 in. |
| July | 63.5 °F | 83.4 °F | 4.1 in. |
| August | 61.4 °F | 82.0 °F | 3.57 in. |
| September | 53.9 °F | 76.5 °F | 3.29 in. |
| October | 42.7 °F | 64.0 °F | 2.77 in. |
| November | 32.9 °F | 50.6 °F | 2.9 in. |
| December | 24.9 °F | 39.0 °F | 2.81 in. |
| Annual | 41.6 °F | 60.6 °F | 40 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 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 |