Deerfield, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 40 °F (low) to 68.7 °F (high). Annual precipitation averages 18.8 Inches. Deerfield is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.7 °F | 45.2 °F | 0.44 in. |
| February | 20.4 °F | 49.2 °F | 0.45 in. |
| March | 28.5 °F | 58.8 °F | 1.14 in. |
| April | 37.1 °F | 67.2 °F | 1.55 in. |
| May | 48.6 °F | 77.1 °F | 2.55 in. |
| June | 59.5 °F | 87.9 °F | 2.73 in. |
| July | 64.5 °F | 92.6 °F | 2.91 in. |
| August | 62.7 °F | 89.9 °F | 2.76 in. |
| September | 54.0 °F | 83.3 °F | 1.33 in. |
| October | 40.1 °F | 70.5 °F | 1.63 in. |
| November | 27.7 °F | 56.7 °F | 0.59 in. |
| December | 19.2 °F | 46.0 °F | 0.74 in. |
| Annual | 40 °F | 68.7 °F | 18.82 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |