Preston, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.1 °F (low) to 67.9 °F (high). Annual precipitation averages 29 Inches. Preston is located in USDA Plant Hardiness Zone 7a. 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 | 22.5 °F | 43.8 °F | 0.71 in. |
| February | 25.2 °F | 47.9 °F | 0.97 in. |
| March | 34.4 °F | 57.7 °F | 2.01 in. |
| April | 43.1 °F | 67.0 °F | 2.21 in. |
| May | 54.1 °F | 76.4 °F | 4.67 in. |
| June | 63.9 °F | 86.9 °F | 4.13 in. |
| July | 68.3 °F | 91.4 °F | 3.77 in. |
| August | 66.6 °F | 89.5 °F | 3.63 in. |
| September | 58.6 °F | 82.3 °F | 2.33 in. |
| October | 45.8 °F | 70.3 °F | 2.31 in. |
| November | 33.7 °F | 56.6 °F | 1.23 in. |
| December | 24.9 °F | 45.1 °F | 1.04 in. |
| Annual | 45.1 °F | 67.9 °F | 29.01 in. |
| 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |