Byron, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.1 °F (low) to 71.8 °F (high). Annual precipitation averages 31.5 Inches. Byron is located in USDA Plant Hardiness Zone 7a. 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 | 22.7 °F | 47.7 °F | 0.93 in. |
| February | 26.0 °F | 51.6 °F | 1.14 in. |
| March | 35.1 °F | 61.8 °F | 2.23 in. |
| April | 43.6 °F | 71.0 °F | 2.92 in. |
| May | 55.2 °F | 80.4 °F | 4.3 in. |
| June | 65.6 °F | 90.6 °F | 4.56 in. |
| July | 70.2 °F | 95.8 °F | 3.44 in. |
| August | 68.4 °F | 93.8 °F | 3.82 in. |
| September | 60.2 °F | 86.3 °F | 2.43 in. |
| October | 46.9 °F | 73.7 °F | 2.94 in. |
| November | 34.6 °F | 60.2 °F | 1.47 in. |
| December | 25.0 °F | 48.6 °F | 1.34 in. |
| Annual | 46.1 °F | 71.8 °F | 31.52 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |