Preston, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 17.6 °C (high). Annual precipitation averages 881.6 Millimeters. Preston is located in USDA Plant Hardiness Zone 6a. 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 | -8.9 °C | 1.9 °C | 20.57 mm |
| February | -6.8 °C | 4.9 °C | 28.7 mm |
| March | -1.2 °C | 11.9 °C | 51.56 mm |
| April | 4.8 °C | 18.1 °C | 91.19 mm |
| May | 11.4 °C | 23.7 °C | 127.76 mm |
| June | 16.9 °C | 28.7 °C | 119.38 mm |
| July | 18.9 °C | 30.8 °C | 115.82 mm |
| August | 17.7 °C | 30 °C | 98.55 mm |
| September | 12.5 °C | 26.3 °C | 79.25 mm |
| October | 5.7 °C | 19.7 °C | 72.14 mm |
| November | -1.2 °C | 11.3 °C | 44.96 mm |
| December | -6.7 °C | 4.1 °C | 31.75 mm |
| Annual | 5.3 °C | 17.6 °C | 881.63 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |