| 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 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: | 66d - Southern Crystalline Ridges and Mountains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 28731 - Flat Rock, NC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 35 | 41 | 51 | 58 | 63 | 62 | 55 | 43 | 35 | 28 | 44 |
| Avg Max Temp (°F) | 48 | 52 | 59 | 68 | 75 | 81 | 85 | 83 | 78 | 69 | 59 | 50 | 67 |
| Avg Precip (In.) | 4.86 | 4.53 | 5.77 | 4.08 | 5.06 | 4.68 | 4.5 | 5.39 | 4.5 | 4.14 | 4.44 | 4.19 | 56.13 |