Palmyra, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.1 °F (low) to 64.6 °F (high). Annual precipitation averages 15.6 Inches. Palmyra is located in USDA Plant Hardiness Zone 7a. 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 | 20.4 °F | 37.9 °F | 1.51 in. |
| February | 24.7 °F | 44.5 °F | 1.35 in. |
| March | 31.6 °F | 55.5 °F | 1.31 in. |
| April | 37.0 °F | 62.8 °F | 1.67 in. |
| May | 44.6 °F | 72.6 °F | 1.98 in. |
| June | 52.0 °F | 84.0 °F | 0.73 in. |
| July | 60.1 °F | 92.5 °F | 0.55 in. |
| August | 59.2 °F | 90.4 °F | 0.69 in. |
| September | 49.7 °F | 80.5 °F | 1.34 in. |
| October | 38.5 °F | 66.1 °F | 1.73 in. |
| November | 29.3 °F | 50.4 °F | 1.38 in. |
| December | 21.8 °F | 38.5 °F | 1.37 in. |
| Annual | 39.1 °F | 64.6 °F | 15.61 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |