Mexican Hat, Utah has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 6.2 °C (low) to 22.7 °C (high). Annual precipitation averages 166.4 Millimeters. Mexican Hat is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.4 °C | 8.3 °C | 18.54 mm |
| February | -2.9 °C | 12.1 °C | 15.75 mm |
| March | 0.7 °C | 17.8 °C | 10.41 mm |
| April | 4.6 °C | 22.2 °C | 7.62 mm |
| May | 10.2 °C | 27.9 °C | 11.18 mm |
| June | 15.3 °C | 34.6 °C | 5.33 mm |
| July | 19.9 °C | 37.1 °C | 14.73 mm |
| August | 18.8 °C | 35.2 °C | 20.83 mm |
| September | 13.4 °C | 30.8 °C | 21.34 mm |
| October | 5.9 °C | 23.3 °C | 17.27 mm |
| November | -1.1 °C | 14.6 °C | 10.92 mm |
| December | -5.1 °C | 8.1 °C | 12.45 mm |
| Annual | 6.2 °C | 22.7 °C | 166.37 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |