Nemaha, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5 °C (low) to 17.5 °C (high). Annual precipitation averages 853.5 Millimeters. Nemaha 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.7 °C | 1.4 °C | 19.81 mm |
| February | -7.3 °C | 4.4 °C | 28.45 mm |
| March | -1.4 °C | 11.6 °C | 50.29 mm |
| April | 4.6 °C | 18.2 °C | 78.49 mm |
| May | 11.4 °C | 23.8 °C | 133.86 mm |
| June | 17 °C | 28.8 °C | 118.11 mm |
| July | 19 °C | 30.7 °C | 113.54 mm |
| August | 17.6 °C | 29.9 °C | 89.15 mm |
| September | 12.3 °C | 26.6 °C | 81.79 mm |
| October | 5.4 °C | 19.8 °C | 64.52 mm |
| November | -1.5 °C | 10.9 °C | 45.21 mm |
| December | -6.9 °C | 3.9 °C | 30.23 mm |
| Annual | 5 °C | 17.5 °C | 853.45 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |