New Harmony, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.3 °C (low) to 18.9 °C (high). Annual precipitation averages 420.1 Millimeters. New Harmony is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 7 °C | 51.56 mm |
| February | -4.4 °C | 8.9 °C | 57.91 mm |
| March | -1.3 °C | 13.4 °C | 48.01 mm |
| April | 1.4 °C | 16.9 °C | 25.91 mm |
| May | 5.7 °C | 22.3 °C | 19.81 mm |
| June | 10.8 °C | 28.8 °C | 10.67 mm |
| July | 14.9 °C | 32.1 °C | 24.38 mm |
| August | 14.3 °C | 31 °C | 42.16 mm |
| September | 9.7 °C | 27 °C | 33.02 mm |
| October | 3.3 °C | 19.9 °C | 41.15 mm |
| November | -2.4 °C | 12.5 °C | 29.46 mm |
| December | -6.2 °C | 6.6 °C | 36.07 mm |
| Annual | 3.3 °C | 18.9 °C | 420.11 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |