Parowan, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.7 °C (low) to 17.3 °C (high). Annual precipitation averages 327.7 Millimeters. 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 | -9.1 °C | 5.3 °C | 26.16 mm |
| February | -7.2 °C | 7.3 °C | 27.94 mm |
| March | -3.8 °C | 11.9 °C | 32.77 mm |
| April | -1 °C | 15.4 °C | 30.73 mm |
| May | 3.6 °C | 20.6 °C | 26.67 mm |
| June | 8.2 °C | 27.1 °C | 11.68 mm |
| July | 12.6 °C | 30.3 °C | 27.18 mm |
| August | 11.7 °C | 29.2 °C | 34.29 mm |
| September | 6.8 °C | 25.1 °C | 20.83 mm |
| October | 0.5 °C | 18.4 °C | 34.8 mm |
| November | -5.2 °C | 11.4 °C | 26.42 mm |
| December | -9.2 °C | 5.1 °C | 28.19 mm |
| Annual | 0.7 °C | 17.3 °C | 327.66 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |