Amherst, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.1 °F (low) to 59.5 °F (high). Annual precipitation averages 39.6 Inches. Amherst 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 | 20.8 °F | 34.5 °F | 2.78 in. |
| February | 21.9 °F | 36.8 °F | 2.26 in. |
| March | 29.1 °F | 45.0 °F | 2.87 in. |
| April | 40.5 °F | 58.5 °F | 3.74 in. |
| May | 51.5 °F | 69.5 °F | 3.84 in. |
| June | 61.1 °F | 78.5 °F | 3.93 in. |
| July | 64.8 °F | 82.2 °F | 3.65 in. |
| August | 63.0 °F | 80.8 °F | 3.74 in. |
| September | 56.1 °F | 74.7 °F | 3.72 in. |
| October | 45.4 °F | 63.2 °F | 3.39 in. |
| November | 35.7 °F | 50.4 °F | 2.97 in. |
| December | 26.9 °F | 39.5 °F | 2.72 in. |
| Annual | 43.1 °F | 59.5 °F | 39.61 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |