| 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: | 63e - Mid-Atlantic Flatwoods |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 23601 - 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 | 50 | 59 | 68 | 76 | 83 | 87 | 86 | 81 | 70 | 61 | 53 | 69 |
| Avg Precip (In.) | 4.1 | 3.53 | 4.62 | 3.29 | 4.01 | 3.59 | 4.89 | 4.74 | 4.75 | 3.48 | 3.24 | 3.38 | 47.62 |