Healdton, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.7 °F (low) to 74.5 °F (high). Annual precipitation averages 35.9 Inches. Healdton is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.4 °F | 53.3 °F | 1.68 in. |
| February | 33.0 °F | 57.1 °F | 2.01 in. |
| March | 41.4 °F | 65.8 °F | 2.75 in. |
| April | 49.1 °F | 73.7 °F | 3.32 in. |
| May | 59.1 °F | 81.0 °F | 5.2 in. |
| June | 68.1 °F | 89.4 °F | 4.01 in. |
| July | 71.6 °F | 94.8 °F | 2.61 in. |
| August | 70.8 °F | 95.3 °F | 2.7 in. |
| September | 63.2 °F | 87.3 °F | 3.75 in. |
| October | 51.2 °F | 76.5 °F | 3.56 in. |
| November | 40.3 °F | 64.7 °F | 2.07 in. |
| December | 31.0 °F | 54.6 °F | 2.24 in. |
| Annual | 50.7 °F | 74.5 °F | 35.9 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |