Van Buren, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.8 °C (low) to 20.4 °C (high). Annual precipitation averages 1259.6 Millimeters. Van Buren is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 7.1 °C | 75.95 mm |
| February | -3.7 °C | 9.9 °C | 83.31 mm |
| March | 1.1 °C | 15.4 °C | 108.71 mm |
| April | 6.6 °C | 21.6 °C | 138.68 mm |
| May | 11.9 °C | 25.3 °C | 139.95 mm |
| June | 16.8 °C | 29.9 °C | 95.76 mm |
| July | 19.1 °C | 31.8 °C | 117.6 mm |
| August | 18.3 °C | 31.8 °C | 94.74 mm |
| September | 13.4 °C | 27.6 °C | 95.76 mm |
| October | 6.1 °C | 21.5 °C | 90.42 mm |
| November | 0.6 °C | 14.6 °C | 116.33 mm |
| December | -3.6 °C | 8.4 °C | 102.36 mm |
| Annual | 6.8 °C | 20.4 °C | 1259.57 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |