Wann, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 16.7 °C (high). Annual precipitation averages 806.7 Millimeters. Wann 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 | -10.2 °C | 0.5 °C | 19.56 mm |
| February | -7.9 °C | 3.2 °C | 25.4 mm |
| March | -2.1 °C | 10.3 °C | 42.93 mm |
| April | 3.9 °C | 17.2 °C | 80.01 mm |
| May | 10.4 °C | 22.8 °C | 122.94 mm |
| June | 16.3 °C | 28.3 °C | 123.95 mm |
| July | 18.8 °C | 30.6 °C | 87.12 mm |
| August | 17.3 °C | 29.4 °C | 99.31 mm |
| September | 11.8 °C | 25.9 °C | 77.22 mm |
| October | 5 °C | 18.7 °C | 61.47 mm |
| November | -2.2 °C | 10.1 °C | 35.81 mm |
| December | -7.6 °C | 2.9 °C | 30.99 mm |
| Annual | 4.5 °C | 16.7 °C | 806.71 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |