Carbondale, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.8 °C (low) to 18.8 °C (high). Annual precipitation averages 974.3 Millimeters. Carbondale 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 | -6.9 °C | 4.3 °C | 24.13 mm |
| February | -4.9 °C | 7 °C | 35.81 mm |
| March | 0.5 °C | 13.3 °C | 60.71 mm |
| April | 6.1 °C | 18.9 °C | 98.55 mm |
| May | 12.4 °C | 23.9 °C | 141.99 mm |
| June | 17.8 °C | 29.1 °C | 136.14 mm |
| July | 20.2 °C | 31.7 °C | 105.92 mm |
| August | 18.9 °C | 30.9 °C | 111 mm |
| September | 14.1 °C | 26.8 °C | 93.47 mm |
| October | 7.1 °C | 20.2 °C | 76.45 mm |
| November | 0.8 °C | 12.9 °C | 51.05 mm |
| December | -4.7 °C | 6.2 °C | 39.12 mm |
| Annual | 6.8 °C | 18.8 °C | 974.34 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |