Boynton, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.1 °F (low) to 71.7 °F (high). Annual precipitation averages 43.5 Inches. Boynton 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 | 27.1 °F | 49.4 °F | 2.16 in. |
| February | 30.5 °F | 53.6 °F | 2.16 in. |
| March | 39.2 °F | 62.7 °F | 3.44 in. |
| April | 47.7 °F | 71.4 °F | 4.38 in. |
| May | 57.9 °F | 78.6 °F | 5.92 in. |
| June | 67.2 °F | 87.2 °F | 4.58 in. |
| July | 70.9 °F | 92.3 °F | 3.7 in. |
| August | 69.5 °F | 92.4 °F | 3.22 in. |
| September | 61.3 °F | 85.1 °F | 4.19 in. |
| October | 49.1 °F | 73.8 °F | 3.94 in. |
| November | 38.8 °F | 62.3 °F | 3.21 in. |
| December | 29.9 °F | 51.5 °F | 2.55 in. |
| Annual | 49.1 °F | 71.7 °F | 43.45 in. |
| 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 : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |