Larned, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 20.1 °C (high). Annual precipitation averages 660.4 Millimeters. Larned 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 | -6.2 °C | 6.3 °C | 19.05 mm |
| February | -4.7 °C | 8.7 °C | 22.1 mm |
| March | 0.2 °C | 14.4 °C | 42.67 mm |
| April | 5.3 °C | 19.7 °C | 56.13 mm |
| May | 11.5 °C | 24.9 °C | 110.49 mm |
| June | 17.3 °C | 31.1 °C | 92.46 mm |
| July | 19.7 °C | 33.6 °C | 95.25 mm |
| August | 18.7 °C | 32.4 °C | 80.52 mm |
| September | 14.2 °C | 28.4 °C | 42.93 mm |
| October | 6.8 °C | 21.3 °C | 50.55 mm |
| November | -0.2 °C | 13.6 °C | 24.13 mm |
| December | -5.2 °C | 7 °C | 24.13 mm |
| Annual | 6.5 °C | 20.1 °C | 660.41 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |