Overbrook, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.7 °F (low) to 65.7 °F (high). Annual precipitation averages 39.3 Inches. Overbrook 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 | 20.1 °F | 40.7 °F | 1.01 in. |
| February | 23.7 °F | 45.0 °F | 1.46 in. |
| March | 33.2 °F | 56.1 °F | 2.37 in. |
| April | 43.6 °F | 65.7 °F | 4.03 in. |
| May | 54.6 °F | 74.1 °F | 5.86 in. |
| June | 64.3 °F | 83.4 °F | 5.76 in. |
| July | 68.6 °F | 88.3 °F | 4.14 in. |
| August | 66.3 °F | 87.2 °F | 4.27 in. |
| September | 57.7 °F | 79.6 °F | 3.69 in. |
| October | 45.3 °F | 68.2 °F | 3.06 in. |
| November | 34.7 °F | 56.2 °F | 2.06 in. |
| December | 24.5 °F | 43.9 °F | 1.56 in. |
| Annual | 44.7 °F | 65.7 °F | 39.27 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°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 |