Chapman, 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 16.8 °C (high). Annual precipitation averages 708.2 Millimeters. Chapman is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | 1.6 °C | 16.26 mm |
| February | -7.6 °C | 3.8 °C | 18.8 mm |
| March | -2.4 °C | 10.6 °C | 37.34 mm |
| April | 3.3 °C | 16.9 °C | 71.88 mm |
| May | 9.9 °C | 22.6 °C | 119.63 mm |
| June | 15.8 °C | 28.2 °C | 103.63 mm |
| July | 18.3 °C | 30.3 °C | 85.85 mm |
| August | 16.9 °C | 29.2 °C | 84.84 mm |
| September | 11.8 °C | 25.8 °C | 59.69 mm |
| October | 4.6 °C | 18.8 °C | 55.63 mm |
| November | -2.4 °C | 10.4 °C | 32 mm |
| December | -7.7 °C | 3.4 °C | 22.61 mm |
| Annual | 4.2 °C | 16.8 °C | 708.16 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |