Brookville, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.4 °C (low) to 19.8 °C (high). Annual precipitation averages 770.6 Millimeters. Brookville 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 | -6.8 °C | 5.4 °C | 19.3 mm |
| February | -5.3 °C | 7.8 °C | 27.69 mm |
| March | 0.1 °C | 14 °C | 45.72 mm |
| April | 5.2 °C | 19.3 °C | 68.33 mm |
| May | 11.6 °C | 24.6 °C | 127.76 mm |
| June | 17.6 °C | 30.9 °C | 103.63 mm |
| July | 20.2 °C | 33.7 °C | 96.77 mm |
| August | 19 °C | 32.5 °C | 97.03 mm |
| September | 14.2 °C | 28.1 °C | 69.09 mm |
| October | 6.9 °C | 21.3 °C | 57.66 mm |
| November | -0.1 °C | 13.2 °C | 30.73 mm |
| December | -5.3 °C | 6.4 °C | 26.92 mm |
| Annual | 6.4 °C | 19.8 °C | 770.63 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 |