Palmyra, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 62.6 °F (high). Annual precipitation averages 32.5 Inches. Palmyra is located in USDA Plant Hardiness Zone 6a. 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 | 14.3 °F | 34.1 °F | 0.82 in. |
| February | 18.9 °F | 39.2 °F | 1.07 in. |
| March | 28.5 °F | 51.3 °F | 1.83 in. |
| April | 39.7 °F | 63.0 °F | 2.99 in. |
| May | 50.7 °F | 73.3 °F | 5.46 in. |
| June | 61.5 °F | 83.0 °F | 4.66 in. |
| July | 65.6 °F | 87.2 °F | 3.9 in. |
| August | 63.0 °F | 85.4 °F | 3.56 in. |
| September | 53.7 °F | 78.9 °F | 3.04 in. |
| October | 41.0 °F | 66.3 °F | 2.49 in. |
| November | 28.3 °F | 50.7 °F | 1.47 in. |
| December | 18.6 °F | 38.3 °F | 1.2 in. |
| Annual | 40.3 °F | 62.6 °F | 32.49 in. |
| 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |