| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 37d - Arkansas Valley Plains | |
| Current Drought Status: | Abnormally Dry | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74966 - Wister, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 31 | 40 | 49 | 58 | 66 | 70 | 68 | 61 | 50 | 39 | 30 | 49 |
| Avg Max Temp (°F) | 50 | 57 | 65 | 74 | 81 | 88 | 93 | 93 | 85 | 77 | 63 | 53 | 73 |
| Avg Precip (In.) | 2.45 | 2.83 | 4.09 | 4.51 | 6.1 | 4.51 | 3.39 | 2.86 | 4.59 | 4.31 | 5.11 | 3.7 | 48.44 |