La Belle, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.8 °F (low) to 63 °F (high). Annual precipitation averages 38.9 Inches. La Belle 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 | 17.7 °F | 34.8 °F | 1.42 in. |
| February | 21.1 °F | 39.6 °F | 1.88 in. |
| March | 31.2 °F | 52.0 °F | 2.36 in. |
| April | 41.9 °F | 64.2 °F | 3.85 in. |
| May | 53.1 °F | 73.7 °F | 5.35 in. |
| June | 62.8 °F | 82.9 °F | 4.6 in. |
| July | 66.4 °F | 86.8 °F | 4.59 in. |
| August | 64.2 °F | 85.4 °F | 3.67 in. |
| September | 55.7 °F | 78.8 °F | 3.65 in. |
| October | 44.1 °F | 66.5 °F | 3.27 in. |
| November | 32.7 °F | 52.0 °F | 2.44 in. |
| December | 23.1 °F | 39.5 °F | 1.84 in. |
| Annual | 42.8 °F | 63 °F | 38.92 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |