| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°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: | 36f - Western Ouachita Valleys |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74536 - Clayton, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 32 | 40 | 48 | 57 | 65 | 69 | 68 | 61 | 51 | 40 | 31 | 49 |
| Avg Max Temp (°F) | 51 | 58 | 66 | 74 | 80 | 87 | 93 | 93 | 86 | 76 | 63 | 54 | 73 |
| Avg Precip (In.) | 2.51 | 2.9 | 4.25 | 4.83 | 6.82 | 5.05 | 3.69 | 2.82 | 5.02 | 4.87 | 5.01 | 3.45 | 51.22 |