Lucas, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.9 °F (low) to 67.1 °F (high). Annual precipitation averages 27.3 Inches. Lucas 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 | 17.6 °F | 40.9 °F | 0.63 in. |
| February | 20.8 °F | 45.7 °F | 0.86 in. |
| March | 30.0 °F | 56.7 °F | 1.4 in. |
| April | 39.4 °F | 66.6 °F | 2.28 in. |
| May | 51.2 °F | 76.0 °F | 4.24 in. |
| June | 62.3 °F | 87.1 °F | 3.67 in. |
| July | 67.2 °F | 92.5 °F | 4.22 in. |
| August | 64.8 °F | 89.9 °F | 3.72 in. |
| September | 55.9 °F | 82.1 °F | 2.34 in. |
| October | 42.4 °F | 69.6 °F | 1.88 in. |
| November | 30.0 °F | 55.0 °F | 1.1 in. |
| December | 20.9 °F | 43.0 °F | 0.95 in. |
| Annual | 41.9 °F | 67.1 °F | 27.29 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 |