Bellefontaine Neighbors, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 8.5 °C (low) to 19 °C (high). Annual precipitation averages 1105.4 Millimeters. Bellefontaine Neighbors is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.7 °C | 4.2 °C | 66.8 mm |
| February | -2.8 °C | 7.3 °C | 59.18 mm |
| March | 2.1 °C | 12.9 °C | 86.61 mm |
| April | 8.1 °C | 19.7 °C | 120.4 mm |
| May | 14.1 °C | 24.7 °C | 132.59 mm |
| June | 19.1 °C | 29.6 °C | 113.79 mm |
| July | 21.2 °C | 31.4 °C | 102.62 mm |
| August | 20.1 °C | 30.7 °C | 95.76 mm |
| September | 15.5 °C | 27 °C | 84.07 mm |
| October | 9.1 °C | 20.7 °C | 83.82 mm |
| November | 2.8 °C | 12.9 °C | 90.68 mm |
| December | -2.2 °C | 6.8 °C | 69.09 mm |
| Annual | 8.5 °C | 19 °C | 1105.41 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |