Leeton, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44 °F (low) to 64.6 °F (high). Annual precipitation averages 43.3 Inches. Leeton 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 | 19.6 °F | 38.8 °F | 1.67 in. |
| February | 23.6 °F | 44.0 °F | 1.96 in. |
| March | 32.9 °F | 54.6 °F | 2.83 in. |
| April | 43.0 °F | 64.7 °F | 4.58 in. |
| May | 53.9 °F | 73.9 °F | 5.48 in. |
| June | 63.4 °F | 82.7 °F | 5.29 in. |
| July | 67.5 °F | 87.2 °F | 4.59 in. |
| August | 65.3 °F | 86.2 °F | 4.08 in. |
| September | 56.9 °F | 78.6 °F | 4.36 in. |
| October | 44.7 °F | 67.5 °F | 3.54 in. |
| November | 33.5 °F | 54.2 °F | 2.87 in. |
| December | 24.2 °F | 42.9 °F | 2.09 in. |
| Annual | 44 °F | 64.6 °F | 43.34 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 |