| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 66b - Northern Sedimentary and Metasedimentary Ridges | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 25425 - Harpers Ferry, WV | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 32 | 41 | 51 | 59 | 63 | 62 | 55 | 42 | 34 | 26 | 42 |
| Avg Max Temp (°F) | 41 | 45 | 55 | 66 | 76 | 84 | 88 | 86 | 80 | 69 | 56 | 46 | 66 |
| Avg Precip (In.) | 2.8 | 2.55 | 3.45 | 3.24 | 3.62 | 3.57 | 3.61 | 3.54 | 3.52 | 2.82 | 3.06 | 2.89 | 38.66 |