La Cygne, 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 19.1 °C (high). Annual precipitation averages 1050.5 Millimeters. La Cygne 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 | 4.9 °C | 36.07 mm |
| February | -4.4 °C | 7.5 °C | 43.43 mm |
| March | 0.8 °C | 13.6 °C | 67.31 mm |
| April | 6.2 °C | 19.2 °C | 105.92 mm |
| May | 12.3 °C | 24.1 °C | 152.65 mm |
| June | 17.8 °C | 29.1 °C | 137.41 mm |
| July | 20.1 °C | 31.8 °C | 108.71 mm |
| August | 18.8 °C | 31.2 °C | 90.93 mm |
| September | 13.8 °C | 27.2 °C | 115.32 mm |
| October | 7.2 °C | 20.7 °C | 85.6 mm |
| November | 0.9 °C | 13.1 °C | 60.96 mm |
| December | -4.2 °C | 6.9 °C | 46.23 mm |
| Annual | 6.9 °C | 19.1 °C | 1050.54 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 |