Carlton, 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 19.4 °C (high). Annual precipitation averages 848.1 Millimeters. Carlton 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.9 °C | 5.1 °C | 22.35 mm |
| February | -5.2 °C | 7.6 °C | 32 mm |
| March | 0.2 °C | 13.7 °C | 56.64 mm |
| April | 5.4 °C | 18.9 °C | 75.18 mm |
| May | 11.8 °C | 24.2 °C | 128.52 mm |
| June | 17.7 °C | 30.3 °C | 112.27 mm |
| July | 20.2 °C | 33.1 °C | 112.78 mm |
| August | 19.1 °C | 32 °C | 98.04 mm |
| September | 14.2 °C | 27.7 °C | 75.69 mm |
| October | 7 °C | 20.9 °C | 62.99 mm |
| November | 0.1 °C | 13.1 °C | 38.1 mm |
| December | -5.2 °C | 6.3 °C | 33.53 mm |
| Annual | 6.5 °C | 19.4 °C | 848.09 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |