Halls Crossing, Utah has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 47 °F (low) to 73.2 °F (high). Annual precipitation averages 6 Inches. Halls Crossing is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.1 °F | 46.9 °F | 0.65 in. |
| February | 30.1 °F | 53.8 °F | 0.6 in. |
| March | 37.4 °F | 64.0 °F | 0.53 in. |
| April | 44.1 °F | 72.2 °F | 0.33 in. |
| May | 54.1 °F | 82.5 °F | 0.3 in. |
| June | 64.2 °F | 94.4 °F | 0.16 in. |
| July | 71.6 °F | 100.2 °F | 0.4 in. |
| August | 69.5 °F | 96.7 °F | 0.56 in. |
| September | 60.0 °F | 88.3 °F | 0.8 in. |
| October | 46.7 °F | 74.0 °F | 0.81 in. |
| November | 34.5 °F | 58.7 °F | 0.38 in. |
| December | 26.2 °F | 46.7 °F | 0.44 in. |
| Annual | 47 °F | 73.2 °F | 5.96 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |