Courtland, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 18.2 °C (high). Annual precipitation averages 738.9 Millimeters. Courtland is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 3.3 °C | 16.26 mm |
| February | -6.6 °C | 5.9 °C | 22.1 mm |
| March | -1.4 °C | 12.4 °C | 39.37 mm |
| April | 4.2 °C | 18.1 °C | 65.28 mm |
| May | 10.7 °C | 23.6 °C | 112.27 mm |
| June | 16.8 °C | 29.5 °C | 112.27 mm |
| July | 19.3 °C | 32.1 °C | 113.03 mm |
| August | 18 °C | 30.7 °C | 85.6 mm |
| September | 12.9 °C | 26.8 °C | 64.52 mm |
| October | 5.6 °C | 19.8 °C | 51.56 mm |
| November | -1.4 °C | 11.5 °C | 30.99 mm |
| December | -6.5 °C | 4.8 °C | 25.65 mm |
| Annual | 5.3 °C | 18.2 °C | 738.9 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |