Belleville, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 18 °C (high). Annual precipitation averages 761.7 Millimeters. Belleville 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 | -8.7 °C | 3.1 °C | 16 mm |
| February | -6.8 °C | 5.7 °C | 23.11 mm |
| March | -1.6 °C | 12.2 °C | 37.59 mm |
| April | 4.2 °C | 18.1 °C | 68.83 mm |
| May | 10.6 °C | 23.6 °C | 116.33 mm |
| June | 16.6 °C | 29.4 °C | 112.52 mm |
| July | 19.2 °C | 32.1 °C | 110.24 mm |
| August | 17.9 °C | 30.4 °C | 92.2 mm |
| September | 12.6 °C | 26.5 °C | 74.93 mm |
| October | 5.6 °C | 19.5 °C | 56.13 mm |
| November | -1.4 °C | 11.3 °C | 29.97 mm |
| December | -6.5 °C | 4.6 °C | 23.88 mm |
| Annual | 5.1 °C | 18 °C | 761.73 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |