Broken Arrow, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.6 °F (low) to 71.4 °F (high). Annual precipitation averages 42.4 Inches. Broken Arrow is located in USDA Plant Hardiness Zone 7b. 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 | 27.3 °F | 48.7 °F | 1.87 in. |
| February | 30.5 °F | 53.2 °F | 1.88 in. |
| March | 39.3 °F | 62.3 °F | 3.39 in. |
| April | 48.3 °F | 71.2 °F | 4.51 in. |
| May | 58.6 °F | 78.7 °F | 5.95 in. |
| June | 67.7 °F | 87.3 °F | 4.54 in. |
| July | 71.9 °F | 92.4 °F | 3.75 in. |
| August | 70.3 °F | 92.3 °F | 3.38 in. |
| September | 62.2 °F | 84.6 °F | 3.92 in. |
| October | 50.0 °F | 73.6 °F | 3.68 in. |
| November | 39.0 °F | 61.8 °F | 3.03 in. |
| December | 30.4 °F | 50.8 °F | 2.49 in. |
| Annual | 49.6 °F | 71.4 °F | 42.39 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 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 |