| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | 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: | 27d - Wellington-McPherson Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 73078 - Piedmont, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 28 | 36 | 46 | 57 | 66 | 71 | 69 | 61 | 49 | 36 | 27 | 48 |
| Avg Max Temp (°F) | 46 | 53 | 61 | 71 | 79 | 87 | 93 | 92 | 84 | 74 | 59 | 49 | 71 |
| Avg Precip (In.) | 1.22 | 1.53 | 2.86 | 3.06 | 5.47 | 4.61 | 2.49 | 2.71 | 3.69 | 3.17 | 2.25 | 1.64 | 34.7 |