| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F 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: | 27q - Rolling Red Hills | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 73601 - Clinton, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 27 | 35 | 45 | 56 | 66 | 70 | 69 | 60 | 48 | 35 | 26 | 47 |
| Avg Max Temp (°F) | 47 | 54 | 62 | 72 | 80 | 89 | 95 | 94 | 85 | 74 | 60 | 49 | 72 |
| Avg Precip (In.) | 1.04 | 1.18 | 2.46 | 2.58 | 5.06 | 4.07 | 2.25 | 2.9 | 3.51 | 2.99 | 1.86 | 1.34 | 31.24 |