Reydon, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.8 °C (low) to 22.3 °C (high). Annual precipitation averages 648.2 Millimeters. Reydon is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.2 °C | 10.3 °C | 20.83 mm |
| February | -2.6 °C | 12.1 °C | 23.37 mm |
| March | 2.1 °C | 17.5 °C | 42.42 mm |
| April | 6.8 °C | 22.2 °C | 63.75 mm |
| May | 12.6 °C | 26.8 °C | 90.42 mm |
| June | 17.9 °C | 31.4 °C | 93.47 mm |
| July | 20.1 °C | 34.3 °C | 63.5 mm |
| August | 19.3 °C | 33.8 °C | 73.66 mm |
| September | 15.2 °C | 29.3 °C | 61.72 mm |
| October | 8.1 °C | 23.2 °C | 59.69 mm |
| November | 1.6 °C | 16.3 °C | 28.96 mm |
| December | -3.2 °C | 10.6 °C | 26.42 mm |
| Annual | 7.8 °C | 22.3 °C | 648.21 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |