Stark, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.5 °C (low) to 19.4 °C (high). Annual precipitation averages 1116.8 Millimeters. Stark 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 | -5.7 °C | 5.7 °C | 37.34 mm |
| February | -3.6 °C | 8.3 °C | 43.18 mm |
| March | 1.4 °C | 14.2 °C | 73.91 mm |
| April | 6.9 °C | 19.5 °C | 117.86 mm |
| May | 12.9 °C | 23.9 °C | 161.29 mm |
| June | 18.2 °C | 29.3 °C | 141.99 mm |
| July | 20.6 °C | 31.8 °C | 114.55 mm |
| August | 19.3 °C | 31.4 °C | 101.85 mm |
| September | 14.7 °C | 27.3 °C | 114.3 mm |
| October | 7.8 °C | 20.8 °C | 92.46 mm |
| November | 1.6 °C | 13.7 °C | 66.55 mm |
| December | -3.6 °C | 7.3 °C | 51.56 mm |
| Annual | 7.5 °C | 19.4 °C | 1116.84 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |