| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°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: | 40b - Osage Cuestas |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74029 - Dewey, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 27 | 36 | 46 | 56 | 65 | 70 | 68 | 60 | 48 | 36 | 26 | 47 |
| Avg Max Temp (°F) | 45 | 52 | 61 | 71 | 79 | 87 | 93 | 93 | 84 | 74 | 59 | 48 | 70 |
| Avg Precip (In.) | 1.42 | 1.83 | 3.44 | 3.76 | 4.95 | 4.49 | 3.02 | 2.99 | 4.52 | 3.53 | 3.27 | 1.99 | 39.21 |