| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| 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: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 23605 - Newport News, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 32 | 39 | 47 | 57 | 65 | 70 | 69 | 64 | 52 | 42 | 35 | 50 |
| Avg Max Temp (°F) | 48 | 51 | 59 | 69 | 76 | 84 | 88 | 86 | 81 | 71 | 61 | 53 | 69 |
| Avg Precip (In.) | 4.12 | 3.53 | 4.59 | 3.3 | 4 | 3.65 | 4.92 | 4.78 | 4.72 | 3.51 | 3.22 | 3.37 | 47.69 |