Tekamah, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.7 °C (low) to 16 °C (high). Annual precipitation averages 781.6 Millimeters. Tekamah 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 | -11.3 °C | -0.6 °C | 17.53 mm |
| February | -9.2 °C | 1.9 °C | 22.61 mm |
| March | -3.1 °C | 9.4 °C | 43.43 mm |
| April | 3.1 °C | 16.7 °C | 93.47 mm |
| May | 10 °C | 22.6 °C | 111.76 mm |
| June | 16 °C | 28.2 °C | 116.33 mm |
| July | 18 °C | 30 °C | 77.98 mm |
| August | 16.5 °C | 28.8 °C | 93.73 mm |
| September | 11.3 °C | 25.4 °C | 83.82 mm |
| October | 4.1 °C | 18.2 °C | 56.39 mm |
| November | -2.9 °C | 9.6 °C | 37.08 mm |
| December | -8.6 °C | 1.8 °C | 27.43 mm |
| Annual | 3.7 °C | 16 °C | 781.56 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 |