| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 39a - Springfield Plateau |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 74965 - Westville, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 29 | 38 | 46 | 55 | 63 | 68 | 66 | 59 | 48 | 38 | 28 | 47 |
| Avg Max Temp (°F) | 46 | 52 | 61 | 70 | 77 | 84 | 90 | 90 | 82 | 72 | 59 | 49 | 69 |
| Avg Precip (In.) | 2.35 | 2.5 | 4.41 | 4.54 | 5.64 | 5.02 | 3.23 | 3.37 | 4.99 | 4.02 | 4.73 | 3.45 | 48.25 |