| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 67b - Northern Shale Valleys |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 24460 - Millboro, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 30 | 38 | 47 | 56 | 60 | 59 | 52 | 40 | 31 | 24 | 40 |
| Avg Max Temp (°F) | 41 | 45 | 55 | 65 | 74 | 81 | 84 | 83 | 76 | 66 | 55 | 45 | 64 |
| Avg Precip (In.) | 3.73 | 3.07 | 3.99 | 3.73 | 4.56 | 3.9 | 4.5 | 3.67 | 3.87 | 3.58 | 3.91 | 3.09 | 45.6 |