Brumley, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.3 °C (low) to 19.1 °C (high). Annual precipitation averages 1116.8 Millimeters. Brumley 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 | -5.4 °C | 5.4 °C | 61.72 mm |
| February | -3.6 °C | 7.9 °C | 56.39 mm |
| March | 1 °C | 13.7 °C | 86.61 mm |
| April | 6.6 °C | 19.4 °C | 123.19 mm |
| May | 12.3 °C | 24.1 °C | 140.46 mm |
| June | 17.4 °C | 28.6 °C | 118.62 mm |
| July | 19.8 °C | 31.1 °C | 99.57 mm |
| August | 18.8 °C | 30.8 °C | 100.33 mm |
| September | 14.2 °C | 26.7 °C | 101.85 mm |
| October | 7.8 °C | 20.6 °C | 81.79 mm |
| November | 2.1 °C | 13.4 °C | 83.31 mm |
| December | -2.9 °C | 7.6 °C | 62.99 mm |
| Annual | 7.3 °C | 19.1 °C | 1116.83 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |