Westville, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48 °F (low) to 69.4 °F (high). Annual precipitation averages 49.5 Inches. Westville 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.9 °F | 47.4 °F | 2.77 in. |
| February | 30.1 °F | 51.6 °F | 2.56 in. |
| March | 38.4 °F | 60.4 °F | 4.21 in. |
| April | 46.7 °F | 69.3 °F | 5.33 in. |
| May | 56.1 °F | 76.4 °F | 6.22 in. |
| June | 65.0 °F | 84.6 °F | 5.0 in. |
| July | 69.0 °F | 89.9 °F | 4.25 in. |
| August | 67.6 °F | 89.8 °F | 3.6 in. |
| September | 60.0 °F | 82.7 °F | 4.41 in. |
| October | 48.4 °F | 71.5 °F | 4.12 in. |
| November | 38.4 °F | 60.0 °F | 3.83 in. |
| December | 29.8 °F | 49.7 °F | 3.17 in. |
| Annual | 48 °F | 69.4 °F | 49.47 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |