Randlett, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 32.6 °F (low) to 63.1 °F (high). Annual precipitation averages 6.9 Inches. Randlett is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.8 °F | 29.4 °F | 0.35 in. |
| February | 13.4 °F | 39.0 °F | 0.34 in. |
| March | 25.4 °F | 54.9 °F | 0.45 in. |
| April | 33.0 °F | 64.2 °F | 0.59 in. |
| May | 42.0 °F | 73.8 °F | 0.76 in. |
| June | 49.6 °F | 85.7 °F | 0.48 in. |
| July | 56.4 °F | 92.8 °F | 0.37 in. |
| August | 54.3 °F | 90.0 °F | 0.74 in. |
| September | 45.3 °F | 80.7 °F | 1.06 in. |
| October | 33.2 °F | 65.4 °F | 0.88 in. |
| November | 22.0 °F | 48.5 °F | 0.39 in. |
| December | 10.3 °F | 32.9 °F | 0.51 in. |
| Annual | 32.6 °F | 63.1 °F | 6.92 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |