Wewoka, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 22.7 °C (high). Annual precipitation averages 1072.1 Millimeters. Wewoka is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.8 °C | 10.4 °C | 45.21 mm |
| February | -0.7 °C | 12.8 °C | 55.37 mm |
| March | 4.1 °C | 17.7 °C | 76.71 mm |
| April | 8.7 °C | 22.7 °C | 107.19 mm |
| May | 14.3 °C | 26.4 °C | 132.59 mm |
| June | 19.2 °C | 31.1 °C | 125.98 mm |
| July | 21 °C | 34.1 °C | 98.3 mm |
| August | 20.3 °C | 34.2 °C | 82.8 mm |
| September | 15.8 °C | 29.9 °C | 109.73 mm |
| October | 9.4 °C | 23.9 °C | 96.77 mm |
| November | 3.6 °C | 17.2 °C | 76.71 mm |
| December | -1.2 °C | 11.5 °C | 64.77 mm |
| Annual | 9.3 °C | 22.7 °C | 1072.13 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |