Lyndon, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.1 °C (low) to 19 °C (high). Annual precipitation averages 975.4 Millimeters. Lyndon is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 4.7 °C | 24.38 mm |
| February | -4.4 °C | 7.3 °C | 36.32 mm |
| March | 0.9 °C | 13.7 °C | 61.21 mm |
| April | 6.3 °C | 18.9 °C | 94.23 mm |
| May | 12.7 °C | 23.9 °C | 140.21 mm |
| June | 18.1 °C | 29.1 °C | 131.83 mm |
| July | 20.3 °C | 31.8 °C | 110.49 mm |
| August | 19.2 °C | 31.1 °C | 102.87 mm |
| September | 14.3 °C | 26.8 °C | 101.35 mm |
| October | 7.4 °C | 20.6 °C | 80.01 mm |
| November | 1.3 °C | 13.2 °C | 54.61 mm |
| December | -4.2 °C | 6.6 °C | 37.85 mm |
| Annual | 7.1 °C | 19 °C | 975.36 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |