Oakley, Idaho has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 35.3 °F (low) to 61 °F (high). Annual precipitation averages 12.3 Inches. Oakley is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.7 °F | 37.5 °F | 0.9 in. |
| February | 22.6 °F | 42.2 °F | 0.75 in. |
| March | 28.2 °F | 51.7 °F | 1.14 in. |
| April | 32.8 °F | 58.7 °F | 1.5 in. |
| May | 40.4 °F | 67.4 °F | 2.1 in. |
| June | 47.0 °F | 76.7 °F | 1.12 in. |
| July | 54.6 °F | 86.4 °F | 0.69 in. |
| August | 53.1 °F | 85.8 °F | 0.72 in. |
| September | 44.7 °F | 76.4 °F | 0.92 in. |
| October | 35.0 °F | 63.3 °F | 0.91 in. |
| November | 25.9 °F | 48.1 °F | 0.75 in. |
| December | 19.4 °F | 37.5 °F | 0.79 in. |
| Annual | 35.3 °F | 61 °F | 12.29 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |