| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 63e - Mid-Atlantic Flatwoods |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 23434 - Suffolk, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 32 | 39 | 46 | 56 | 64 | 69 | 67 | 62 | 50 | 41 | 33 | 49 |
| Avg Max Temp (°F) | 49 | 52 | 60 | 69 | 77 | 84 | 88 | 86 | 81 | 71 | 62 | 53 | 69 |
| Avg Precip (In.) | 4.15 | 3.56 | 4.43 | 3.31 | 3.91 | 3.99 | 5 | 5.34 | 4.91 | 3.64 | 3.09 | 3.31 | 48.64 |