| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 45e - Northern Inner Piedmont | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 22203 - Arlington, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 26 | 34 | 42 | 52 | 62 | 67 | 65 | 58 | 45 | 36 | 29 | 45 |
| Avg Max Temp (°F) | 43 | 46 | 56 | 67 | 76 | 84 | 88 | 86 | 79 | 69 | 57 | 47 | 66 |
| Avg Precip (In.) | 3.37 | 2.88 | 3.9 | 3.3 | 4.31 | 3.64 | 4.12 | 3.9 | 4.18 | 3.46 | 3.37 | 3.28 | 43.71 |