Hanston, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.5 °C (low) to 20.4 °C (high). Annual precipitation averages 607.3 Millimeters. Hanston 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 | -7.2 °C | 6.8 °C | 15.75 mm |
| February | -5.8 °C | 9.1 °C | 18.54 mm |
| March | -0.9 °C | 14.7 °C | 35.81 mm |
| April | 4.1 °C | 19.9 °C | 51.31 mm |
| May | 10.5 °C | 25.2 °C | 92.46 mm |
| June | 16.6 °C | 31.2 °C | 84.58 mm |
| July | 19.2 °C | 33.9 °C | 95.76 mm |
| August | 18.1 °C | 32.6 °C | 79.76 mm |
| September | 13.3 °C | 28.7 °C | 43.43 mm |
| October | 5.7 °C | 21.6 °C | 48.51 mm |
| November | -1.2 °C | 13.8 °C | 18.29 mm |
| December | -6.1 °C | 7.3 °C | 23.11 mm |
| Annual | 5.5 °C | 20.4 °C | 607.31 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |