| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°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 |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74962 - Vian, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 31 | 39 | 48 | 58 | 66 | 71 | 69 | 62 | 51 | 39 | 30 | 49 |
| Avg Max Temp (°F) | 47 | 54 | 62 | 72 | 79 | 86 | 92 | 92 | 84 | 74 | 60 | 51 | 71 |
| Avg Precip (In.) | 2.29 | 2.59 | 4.18 | 4.39 | 5.71 | 4.68 | 2.96 | 2.98 | 4.82 | 4.29 | 4.76 | 3.22 | 46.86 |