| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F 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. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 66d - Southern Crystalline Ridges and Mountains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 28790 - Zirconia, NC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 34 | 41 | 50 | 58 | 63 | 61 | 55 | 43 | 34 | 28 | 43 |
| Avg Max Temp (°F) | 47 | 51 | 59 | 67 | 75 | 81 | 84 | 82 | 77 | 68 | 59 | 50 | 67 |
| Avg Precip (In.) | 4.67 | 4.5 | 5.79 | 4.09 | 5.03 | 4.61 | 4.59 | 5.36 | 4.48 | 4.04 | 4.5 | 4.16 | 55.82 |