Crofton, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.9 °C (low) to 15.2 °C (high). Annual precipitation averages 727.5 Millimeters. Crofton is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.8 °C | -1 °C | 16.26 mm |
| February | -9.6 °C | 1.7 °C | 23.37 mm |
| March | -4.1 °C | 8.2 °C | 40.13 mm |
| April | 2.2 °C | 15.1 °C | 85.09 mm |
| May | 8.7 °C | 21.4 °C | 103.63 mm |
| June | 14.9 °C | 27.1 °C | 106.17 mm |
| July | 17.3 °C | 29.7 °C | 75.18 mm |
| August | 16.1 °C | 28.4 °C | 82.55 mm |
| September | 10.9 °C | 24.6 °C | 75.44 mm |
| October | 3.6 °C | 17.1 °C | 66.8 mm |
| November | -3.8 °C | 8.4 °C | 29.97 mm |
| December | -9.6 °C | 1.1 °C | 22.86 mm |
| Annual | 2.9 °C | 15.2 °C | 727.45 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |