Belleville, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.2 °F (low) to 64.5 °F (high). Annual precipitation averages 30 Inches. 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 | 16.3 °F | 37.6 °F | 0.63 in. |
| February | 19.8 °F | 42.2 °F | 0.91 in. |
| March | 29.2 °F | 54.0 °F | 1.48 in. |
| April | 39.5 °F | 64.5 °F | 2.71 in. |
| May | 51.0 °F | 74.4 °F | 4.58 in. |
| June | 61.8 °F | 84.9 °F | 4.43 in. |
| July | 66.5 °F | 89.7 °F | 4.34 in. |
| August | 64.2 °F | 86.8 °F | 3.63 in. |
| September | 54.7 °F | 79.7 °F | 2.95 in. |
| October | 42.1 °F | 67.1 °F | 2.21 in. |
| November | 29.4 °F | 52.4 °F | 1.18 in. |
| December | 20.3 °F | 40.3 °F | 0.94 in. |
| Annual | 41.2 °F | 64.5 °F | 29.99 in. |
| 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 : -10°F to -5°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 |