Wapanucka, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 23.2 °C (high). Annual precipitation averages 1087.9 Millimeters. Wapanucka is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 11.1 °C | 57.91 mm |
| February | 0.5 °C | 13.6 °C | 60.96 mm |
| March | 4.9 °C | 18.2 °C | 91.69 mm |
| April | 9.4 °C | 22.9 °C | 107.95 mm |
| May | 15.2 °C | 26.8 °C | 149.61 mm |
| June | 20 °C | 31.4 °C | 112.78 mm |
| July | 21.9 °C | 34.4 °C | 78.49 mm |
| August | 21.2 °C | 34.6 °C | 64.01 mm |
| September | 17.1 °C | 30.6 °C | 99.82 mm |
| October | 10.4 °C | 24.4 °C | 112.27 mm |
| November | 4.6 °C | 18.1 °C | 76.45 mm |
| December | -0.4 °C | 12.3 °C | 75.95 mm |
| Annual | 10.3 °C | 23.2 °C | 1087.89 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |