McFarland, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.8 °F (low) to 66.3 °F (high). Annual precipitation averages 35.7 Inches. McFarland 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.1 °F | 40.1 °F | 0.74 in. |
| February | 22.4 °F | 44.7 °F | 1.11 in. |
| March | 32.2 °F | 56.2 °F | 2.07 in. |
| April | 42.7 °F | 66.8 °F | 3.69 in. |
| May | 53.9 °F | 75.7 °F | 5.07 in. |
| June | 64.2 °F | 85.1 °F | 5.18 in. |
| July | 68.4 °F | 89.7 °F | 4.59 in. |
| August | 66.0 °F | 88.5 °F | 4.38 in. |
| September | 57.0 °F | 81.0 °F | 3.27 in. |
| October | 44.3 °F | 69.3 °F | 2.69 in. |
| November | 32.6 °F | 55.4 °F | 1.62 in. |
| December | 22.7 °F | 43.2 °F | 1.26 in. |
| Annual | 43.8 °F | 66.3 °F | 35.67 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |