| 2023 Hardiness Zone: | 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 6a: -10F to -5F |
| 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: | 40d - Cherokee Plains |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74331 - Afton, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 28 | 37 | 46 | 55 | 64 | 68 | 66 | 59 | 47 | 36 | 27 | 46 |
| Avg Max Temp (°F) | 45 | 51 | 61 | 71 | 78 | 86 | 91 | 91 | 83 | 72 | 59 | 48 | 70 |
| Avg Precip (In.) | 1.87 | 2.09 | 3.88 | 4.04 | 5.37 | 4.76 | 3.42 | 3.36 | 5.12 | 3.87 | 4.46 | 2.71 | 44.95 |