Roosevelt, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.9 °F (low) to 74.2 °F (high). Annual precipitation averages 30.3 Inches. Roosevelt 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 | 26.7 °F | 52.0 °F | 0.99 in. |
| February | 30.1 °F | 55.9 °F | 1.19 in. |
| March | 38.4 °F | 65.2 °F | 2.17 in. |
| April | 46.4 °F | 73.3 °F | 2.84 in. |
| May | 57.9 °F | 82.5 °F | 4.62 in. |
| June | 67.7 °F | 91.6 °F | 3.98 in. |
| July | 71.3 °F | 96.2 °F | 2.61 in. |
| August | 70.0 °F | 95.2 °F | 3.0 in. |
| September | 62.4 °F | 87.2 °F | 2.97 in. |
| October | 49.8 °F | 75.8 °F | 2.89 in. |
| November | 37.7 °F | 63.2 °F | 1.61 in. |
| December | 28.7 °F | 52.7 °F | 1.45 in. |
| Annual | 48.9 °F | 74.2 °F | 30.32 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |