Amelia, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.2 °F (low) to 64 °F (high). Annual precipitation averages 44.8 Inches. Amelia 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.4 °F | 38.9 °F | 3.18 in. |
| February | 25.6 °F | 43.1 °F | 2.9 in. |
| March | 33.4 °F | 52.8 °F | 4.16 in. |
| April | 44.0 °F | 64.9 °F | 4.48 in. |
| May | 54.4 °F | 73.9 °F | 4.92 in. |
| June | 63.0 °F | 82.4 °F | 4.45 in. |
| July | 66.1 °F | 85.3 °F | 4.49 in. |
| August | 64.5 °F | 84.7 °F | 3.51 in. |
| September | 57.6 °F | 78.6 °F | 2.97 in. |
| October | 46.0 °F | 67.0 °F | 3.0 in. |
| November | 35.7 °F | 53.6 °F | 3.21 in. |
| December | 28.6 °F | 43.1 °F | 3.48 in. |
| Annual | 45.2 °F | 64 °F | 44.75 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |