Empire City, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.3 °F (low) to 74.4 °F (high). Annual precipitation averages 34.6 Inches. Empire City is located in USDA Plant Hardiness Zone 8a. 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 | 28.6 °F | 52.9 °F | 1.4 in. |
| February | 32.1 °F | 56.7 °F | 1.71 in. |
| March | 40.8 °F | 65.8 °F | 2.64 in. |
| April | 48.6 °F | 73.8 °F | 3.34 in. |
| May | 59.2 °F | 81.6 °F | 4.74 in. |
| June | 68.0 °F | 89.9 °F | 4.13 in. |
| July | 71.8 °F | 95.4 °F | 2.41 in. |
| August | 70.9 °F | 95.4 °F | 2.73 in. |
| September | 63.2 °F | 87.0 °F | 3.61 in. |
| October | 50.9 °F | 76.1 °F | 3.69 in. |
| November | 39.6 °F | 64.2 °F | 2.28 in. |
| December | 30.4 °F | 53.9 °F | 1.94 in. |
| Annual | 50.3 °F | 74.4 °F | 34.62 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |