Parowan, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.2 °F (low) to 63.1 °F (high). Annual precipitation averages 12.9 Inches. Parowan is located in USDA Plant Hardiness Zone 6a. 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 | 15.6 °F | 41.5 °F | 1.03 in. |
| February | 19.0 °F | 45.2 °F | 1.1 in. |
| March | 25.1 °F | 53.5 °F | 1.29 in. |
| April | 30.2 °F | 59.7 °F | 1.21 in. |
| May | 38.5 °F | 69.1 °F | 1.05 in. |
| June | 46.8 °F | 80.8 °F | 0.46 in. |
| July | 54.6 °F | 86.5 °F | 1.07 in. |
| August | 53.1 °F | 84.5 °F | 1.35 in. |
| September | 44.3 °F | 77.1 °F | 0.82 in. |
| October | 32.9 °F | 65.1 °F | 1.37 in. |
| November | 22.7 °F | 52.5 °F | 1.04 in. |
| December | 15.4 °F | 41.2 °F | 1.11 in. |
| Annual | 33.2 °F | 63.1 °F | 12.9 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |