Sterling, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.9 °F (low) to 62.8 °F (high). Annual precipitation averages 12 Inches. Sterling is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.4 °F | 37.3 °F | 0.95 in. |
| February | 19.7 °F | 42.8 °F | 0.88 in. |
| March | 26.4 °F | 53.3 °F | 1.14 in. |
| April | 31.3 °F | 60.2 °F | 1.26 in. |
| May | 38.6 °F | 69.8 °F | 1.33 in. |
| June | 46.4 °F | 82.0 °F | 0.78 in. |
| July | 53.6 °F | 89.2 °F | 0.61 in. |
| August | 51.9 °F | 87.2 °F | 0.81 in. |
| September | 43.3 °F | 78.6 °F | 1.05 in. |
| October | 32.4 °F | 65.2 °F | 1.2 in. |
| November | 22.7 °F | 50.5 °F | 0.93 in. |
| December | 14.6 °F | 37.4 °F | 1.09 in. |
| Annual | 32.9 °F | 62.8 °F | 12.03 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |