Cainsville, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.4 °F (low) to 62 °F (high). Annual precipitation averages 38.7 Inches. Cainsville 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 | 15.2 °F | 33.4 °F | 1.02 in. |
| February | 19.2 °F | 38.6 °F | 1.38 in. |
| March | 29.7 °F | 51.0 °F | 2.22 in. |
| April | 40.4 °F | 62.8 °F | 3.95 in. |
| May | 52.0 °F | 72.7 °F | 5.54 in. |
| June | 61.9 °F | 82.1 °F | 5.19 in. |
| July | 65.9 °F | 86.4 °F | 4.61 in. |
| August | 63.6 °F | 84.9 °F | 4.36 in. |
| September | 54.7 °F | 77.7 °F | 3.8 in. |
| October | 42.6 °F | 65.4 °F | 3.13 in. |
| November | 30.8 °F | 50.6 °F | 2.0 in. |
| December | 20.6 °F | 38.4 °F | 1.52 in. |
| Annual | 41.4 °F | 62 °F | 38.72 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 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 |