| 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 7b: 5F to 10F |
| 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: | 29g - Arbuckle Uplift |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 73401 - Ardmore, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 33 | 41 | 50 | 60 | 68 | 72 | 71 | 64 | 52 | 40 | 31 | 51 |
| Avg Max Temp (°F) | 51 | 57 | 65 | 74 | 81 | 89 | 95 | 95 | 87 | 76 | 64 | 54 | 74 |
| Avg Precip (In.) | 1.79 | 2.18 | 3.22 | 3.25 | 5.1 | 4.24 | 2.43 | 2.48 | 4.07 | 4.41 | 2.72 | 2.35 | 38.25 |