Longdale, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8 °C (low) to 21.9 °C (high). Annual precipitation averages 753.1 Millimeters. Longdale 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.3 °C | 9.2 °C | 22.1 mm |
| February | -2.8 °C | 11.2 °C | 28.96 mm |
| March | 2.1 °C | 16.6 °C | 53.09 mm |
| April | 6.8 °C | 21.3 °C | 74.17 mm |
| May | 12.8 °C | 26.2 °C | 103.38 mm |
| June | 18.4 °C | 31.6 °C | 102.36 mm |
| July | 20.8 °C | 34.6 °C | 69.09 mm |
| August | 19.9 °C | 33.8 °C | 85.85 mm |
| September | 15.6 °C | 29.6 °C | 67.06 mm |
| October | 8.4 °C | 22.9 °C | 71.88 mm |
| November | 1.8 °C | 15.7 °C | 41.15 mm |
| December | -3.3 °C | 9.8 °C | 34.04 mm |
| Annual | 8 °C | 21.9 °C | 753.13 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |