La Belle, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 17.2 °C (high). Annual precipitation averages 988.6 Millimeters. 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 | -7.9 °C | 1.6 °C | 36.07 mm |
| February | -6.1 °C | 4.2 °C | 47.75 mm |
| March | -0.4 °C | 11.1 °C | 59.94 mm |
| April | 5.5 °C | 17.9 °C | 97.79 mm |
| May | 11.7 °C | 23.2 °C | 135.89 mm |
| June | 17.1 °C | 28.3 °C | 116.84 mm |
| July | 19.1 °C | 30.4 °C | 116.59 mm |
| August | 17.9 °C | 29.7 °C | 93.22 mm |
| September | 13.2 °C | 26 °C | 92.71 mm |
| October | 6.7 °C | 19.2 °C | 83.06 mm |
| November | 0.4 °C | 11.1 °C | 61.98 mm |
| December | -4.9 °C | 4.2 °C | 46.74 mm |
| Annual | 6 °C | 17.2 °C | 988.58 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |