Clay Center, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 17 °C (high). Annual precipitation averages 725.2 Millimeters. Clay Center 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 | -9.6 °C | 1.8 °C | 15.24 mm |
| February | -7.6 °C | 4 °C | 18.8 mm |
| March | -2.7 °C | 11.2 °C | 34.29 mm |
| April | 3.3 °C | 16.9 °C | 62.48 mm |
| May | 9.8 °C | 22.5 °C | 125.73 mm |
| June | 15.9 °C | 28.4 °C | 99.06 mm |
| July | 18.3 °C | 30.5 °C | 104.65 mm |
| August | 16.9 °C | 29.4 °C | 93.47 mm |
| September | 11.8 °C | 26 °C | 57.91 mm |
| October | 4.6 °C | 18.9 °C | 58.42 mm |
| November | -2.4 °C | 10.6 °C | 31.24 mm |
| December | -7.6 °C | 3.6 °C | 23.88 mm |
| Annual | 4.2 °C | 17 °C | 725.17 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |