| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 63b - Chesapeake-Pamlico Lowlands and Tidal Marshes |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 23505 - Norfolk, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 33 | 40 | 47 | 57 | 66 | 71 | 70 | 64 | 52 | 43 | 36 | 51 |
| Avg Max Temp (°F) | 48 | 50 | 58 | 67 | 75 | 83 | 87 | 85 | 80 | 70 | 61 | 52 | 68 |
| Avg Precip (In.) | 4.04 | 3.4 | 4.24 | 3.32 | 3.84 | 3.71 | 5.05 | 4.79 | 4.33 | 3.48 | 3.05 | 3.17 | 46.4 |