West Milton, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.9 °F (low) to 62.1 °F (high). Annual precipitation averages 40.9 Inches. West Milton 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 | 20.2 °F | 35.7 °F | 2.98 in. |
| February | 22.4 °F | 39.5 °F | 2.27 in. |
| March | 30.7 °F | 49.8 °F | 3.24 in. |
| April | 41.5 °F | 62.7 °F | 4.11 in. |
| May | 52.6 °F | 73.0 °F | 4.5 in. |
| June | 61.6 °F | 81.5 °F | 4.41 in. |
| July | 64.6 °F | 84.6 °F | 4.24 in. |
| August | 62.7 °F | 83.6 °F | 3.13 in. |
| September | 55.1 °F | 77.9 °F | 3.12 in. |
| October | 43.7 °F | 65.5 °F | 2.83 in. |
| November | 33.5 °F | 51.6 °F | 3.06 in. |
| December | 25.7 °F | 40.3 °F | 3.02 in. |
| Annual | 42.9 °F | 62.1 °F | 40.91 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 |