Oakley, Utah has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from -1.4 °C (low) to 14.8 °C (high). Annual precipitation averages 426 Millimeters. Oakley is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.9 °C | 1.8 °C | 43.94 mm |
| February | -9.4 °C | 3.8 °C | 34.8 mm |
| March | -5.4 °C | 8.7 °C | 37.85 mm |
| April | -2.2 °C | 13.2 °C | 39.37 mm |
| May | 1.5 °C | 18.4 °C | 44.45 mm |
| June | 5.1 °C | 24.6 °C | 26.42 mm |
| July | 9.1 °C | 29.6 °C | 21.08 mm |
| August | 8.7 °C | 28.7 °C | 26.92 mm |
| September | 4 °C | 23.7 °C | 38.35 mm |
| October | -1.2 °C | 16.1 °C | 40.39 mm |
| November | -6.1 °C | 7.6 °C | 36.83 mm |
| December | -10.3 °C | 1.8 °C | 35.56 mm |
| Annual | -1.4 °C | 14.8 °C | 425.96 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |