Buffalo, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.4 °C (low) to 19.2 °C (high). Annual precipitation averages 1158.5 Millimeters. Buffalo is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 5.7 °C | 58.93 mm |
| February | -3.2 °C | 8.6 °C | 55.12 mm |
| March | 1.6 °C | 14 °C | 89.92 mm |
| April | 6.8 °C | 19.6 °C | 124.97 mm |
| May | 12.3 °C | 23.9 °C | 141.99 mm |
| June | 17.3 °C | 28.6 °C | 116.33 mm |
| July | 19.6 °C | 31.1 °C | 102.62 mm |
| August | 18.7 °C | 30.7 °C | 102.87 mm |
| September | 14.1 °C | 26.7 °C | 113.03 mm |
| October | 7.7 °C | 20.6 °C | 90.68 mm |
| November | 1.9 °C | 13.4 °C | 97.03 mm |
| December | -2.8 °C | 7.6 °C | 65.02 mm |
| Annual | 7.4 °C | 19.2 °C | 1158.51 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |