| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°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: | 45f - Northern Outer Piedmont |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 27511 - Cary, NC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 32 | 39 | 47 | 56 | 64 | 69 | 67 | 61 | 48 | 40 | 33 | 49 |
| Avg Max Temp (°F) | 50 | 54 | 62 | 72 | 78 | 85 | 89 | 87 | 81 | 71 | 62 | 53 | 70 |
| Avg Precip (In.) | 4.26 | 3.54 | 4.33 | 3.03 | 3.99 | 3.86 | 4.41 | 4.13 | 4.3 | 3.48 | 3.14 | 3.2 | 45.66 |