Finley, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.4 °F (low) to 74.4 °F (high). Annual precipitation averages 48.8 Inches. Finley 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 | 29.8 °F | 53.3 °F | 2.96 in. |
| February | 33.9 °F | 58.0 °F | 3.0 in. |
| March | 41.1 °F | 65.8 °F | 4.21 in. |
| April | 49.1 °F | 73.8 °F | 4.58 in. |
| May | 58.9 °F | 80.8 °F | 6.22 in. |
| June | 67.5 °F | 88.5 °F | 4.34 in. |
| July | 70.7 °F | 93.5 °F | 3.38 in. |
| August | 69.2 °F | 94.0 °F | 3.14 in. |
| September | 62.2 °F | 87.5 °F | 4.24 in. |
| October | 50.3 °F | 76.5 °F | 4.64 in. |
| November | 40.2 °F | 65.0 °F | 4.0 in. |
| December | 32.3 °F | 55.5 °F | 4.11 in. |
| Annual | 50.4 °F | 74.4 °F | 48.82 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |