Lyons, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.4 °F (low) to 67.2 °F (high). Annual precipitation averages 28.8 Inches. Lyons 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 | 21.2 °F | 42.5 °F | 0.71 in. |
| February | 24.0 °F | 46.4 °F | 1.05 in. |
| March | 33.5 °F | 57.1 °F | 1.85 in. |
| April | 42.6 °F | 66.3 °F | 2.28 in. |
| May | 53.9 °F | 75.8 °F | 4.7 in. |
| June | 64.3 °F | 86.9 °F | 4.04 in. |
| July | 68.5 °F | 91.2 °F | 4.01 in. |
| August | 66.4 °F | 89.2 °F | 3.6 in. |
| September | 57.8 °F | 82.0 °F | 2.17 in. |
| October | 44.8 °F | 69.6 °F | 2.33 in. |
| November | 32.3 °F | 55.7 °F | 1.12 in. |
| December | 23.6 °F | 43.9 °F | 0.97 in. |
| Annual | 44.4 °F | 67.2 °F | 28.83 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |