| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°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: | 45c - Carolina Slate Belt | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 27516 - Chapel Hill, NC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 29 | 37 | 45 | 54 | 62 | 66 | 65 | 58 | 45 | 37 | 30 | 46 |
| Avg Max Temp (°F) | 49 | 53 | 62 | 71 | 78 | 85 | 89 | 87 | 81 | 71 | 62 | 53 | 70 |
| Avg Precip (In.) | 4.35 | 3.6 | 4.48 | 3.29 | 4.44 | 3.99 | 4.05 | 4.35 | 4.38 | 3.66 | 3.56 | 3.26 | 47.41 |