Langley, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 21.4 °C (high). Annual precipitation averages 1177.8 Millimeters. Langley is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.5 °C | 8.6 °C | 57.15 mm |
| February | -1.6 °C | 11.2 °C | 56.64 mm |
| March | 3.2 °C | 16.3 °C | 92.2 mm |
| April | 8.1 °C | 21.6 °C | 115.82 mm |
| May | 13.7 °C | 25.6 °C | 156.72 mm |
| June | 18.8 °C | 30.2 °C | 124.21 mm |
| July | 21.1 °C | 33.1 °C | 108.71 mm |
| August | 20.2 °C | 33.1 °C | 92.96 mm |
| September | 15.7 °C | 28.7 °C | 113.28 mm |
| October | 9.1 °C | 22.6 °C | 103.12 mm |
| November | 3.2 °C | 16 °C | 87.88 mm |
| December | -1.7 °C | 10.1 °C | 69.09 mm |
| Annual | 8.9 °C | 21.4 °C | 1177.78 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |