Atoka, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 23.2 °C (high). Annual precipitation averages 1123.7 Millimeters. Atoka 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 11.2 °C | 60.71 mm |
| February | 0.4 °C | 13.7 °C | 60.71 mm |
| March | 4.8 °C | 18.2 °C | 93.22 mm |
| April | 9.3 °C | 22.8 °C | 110.49 mm |
| May | 15 °C | 26.7 °C | 157.99 mm |
| June | 19.7 °C | 31.3 °C | 120.14 mm |
| July | 21.6 °C | 34.2 °C | 82.3 mm |
| August | 20.9 °C | 34.5 °C | 68.83 mm |
| September | 16.7 °C | 30.4 °C | 104.39 mm |
| October | 10.2 °C | 24.4 °C | 102.11 mm |
| November | 4.4 °C | 18 °C | 82.8 mm |
| December | -0.2 °C | 12.4 °C | 80.01 mm |
| Annual | 10.1 °C | 23.2 °C | 1123.7 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 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 |