Lyons, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.9 °C (low) to 19.6 °C (high). Annual precipitation averages 732.3 Millimeters. 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 | -6 °C | 5.8 °C | 18.03 mm |
| February | -4.4 °C | 8 °C | 26.67 mm |
| March | 0.8 °C | 13.9 °C | 46.99 mm |
| April | 5.9 °C | 19.1 °C | 57.91 mm |
| May | 12.2 °C | 24.3 °C | 119.38 mm |
| June | 17.9 °C | 30.5 °C | 102.62 mm |
| July | 20.3 °C | 32.9 °C | 101.85 mm |
| August | 19.1 °C | 31.8 °C | 91.44 mm |
| September | 14.3 °C | 27.8 °C | 55.12 mm |
| October | 7.1 °C | 20.9 °C | 59.18 mm |
| November | 0.2 °C | 13.2 °C | 28.45 mm |
| December | -4.7 °C | 6.6 °C | 24.64 mm |
| Annual | 6.9 °C | 19.6 °C | 732.28 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |