Oakley, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.3 °C (low) to 19.2 °C (high). Annual precipitation averages 529.3 Millimeters. Oakley is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.9 °C | 6 °C | 9.4 mm |
| February | -7.7 °C | 7.7 °C | 13.21 mm |
| March | -3.3 °C | 13.5 °C | 27.43 mm |
| April | 1.6 °C | 18.2 °C | 46.99 mm |
| May | 7.9 °C | 23.7 °C | 79.5 mm |
| June | 14.1 °C | 30.2 °C | 67.82 mm |
| July | 17 °C | 33 °C | 96.01 mm |
| August | 15.9 °C | 31.6 °C | 73.66 mm |
| September | 10.7 °C | 27.4 °C | 44.96 mm |
| October | 3.2 °C | 19.9 °C | 38.61 mm |
| November | -3.4 °C | 12.5 °C | 17.02 mm |
| December | -8.1 °C | 6.6 °C | 14.73 mm |
| Annual | 3.3 °C | 19.2 °C | 529.34 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |