Trotwood, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.5 °F (low) to 62.9 °F (high). Annual precipitation averages 41.4 Inches. Trotwood 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 | 21.1 °F | 36.6 °F | 3.11 in. |
| February | 23.3 °F | 40.4 °F | 2.35 in. |
| March | 31.4 °F | 50.6 °F | 3.4 in. |
| April | 42.2 °F | 63.6 °F | 4.34 in. |
| May | 53.2 °F | 73.8 °F | 4.52 in. |
| June | 62.1 °F | 82.2 °F | 4.49 in. |
| July | 65.3 °F | 85.3 °F | 4.03 in. |
| August | 63.4 °F | 84.5 °F | 3.0 in. |
| September | 55.9 °F | 78.2 °F | 3.1 in. |
| October | 44.1 °F | 66.0 °F | 2.94 in. |
| November | 33.9 °F | 52.3 °F | 3.02 in. |
| December | 26.3 °F | 41.0 °F | 3.14 in. |
| Annual | 43.5 °F | 62.9 °F | 41.44 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 |