Ashley, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.6 °F (low) to 64.1 °F (high). Annual precipitation averages 39.8 Inches. Ashley 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.3 °F | 36.9 °F | 2.15 in. |
| February | 22.6 °F | 42.0 °F | 2.07 in. |
| March | 32.0 °F | 53.1 °F | 2.84 in. |
| April | 42.9 °F | 65.2 °F | 4.22 in. |
| May | 53.4 °F | 74.5 °F | 4.68 in. |
| June | 62.7 °F | 83.2 °F | 4.55 in. |
| July | 66.5 °F | 87.0 °F | 4.3 in. |
| August | 64.6 °F | 85.8 °F | 3.41 in. |
| September | 56.1 °F | 79.1 °F | 3.66 in. |
| October | 44.5 °F | 67.2 °F | 2.94 in. |
| November | 33.6 °F | 53.4 °F | 2.81 in. |
| December | 24.4 °F | 41.2 °F | 2.2 in. |
| Annual | 43.6 °F | 64.1 °F | 39.83 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |