| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 65m - Rolling Coastal Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 22520 - Montross, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 29 | 36 | 45 | 54 | 63 | 67 | 66 | 59 | 47 | 39 | 31 | 47 |
| Avg Max Temp (°F) | 46 | 50 | 59 | 69 | 77 | 85 | 89 | 87 | 81 | 70 | 60 | 50 | 68 |
| Avg Precip (In.) | 3.55 | 2.92 | 4.04 | 3.03 | 4.39 | 3.53 | 4.48 | 3.95 | 4.18 | 3.45 | 3.13 | 3.17 | 43.82 |