WeatherWX.com
Harpers Ferry Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 25°F Lo 11°F | Hi 29°F Lo 13°F | Hi 44°F Lo 28°F | Hi 55°F Lo 38°F | Hi 67°F Lo 50°F | Hi 77°F Lo 60°F | Hi 81°F Lo 64°F | Hi 81°F Lo 62°F | Hi 74°F Lo 55°F | Hi 59°F Lo 43°F | Hi 45°F Lo 31°F | Hi 32°F Lo 20°F |
| 9 mph | 9 mph | 9 mph | 10 mph | 8 mph | 7 mph | 7 mph | 7 mph | 8 mph | 9 mph | 10 mph | 9 mph |
| 1.4 in | 1.5 in | 2.8 in | 4.7 in | 5.3 in | 6 in | 4.5 in | 3.9 in | 4.1 in | 3.8 in | 2.2 in | 2.3 in |
| 89% | 88% | 79% | 77% | 81% | 83% | 81% | 78% | 77% | 73% | 76% | 83% |
| 63% | 61% | 55% | 53% | 47% | 39% | 35% | 31% | 33% | 40% | 44% | 58% |
| 30.1 in | 30.1 in | 30.1 in | 29.9 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 19 | 17 | 21 | 20 | 22 | 21 | 24 | 24 | 24 | 25 | 23 | 19 |
| 8 | 7 | 7 | 9 | 9 | 9 | 7 | 7 | 6 | 6 | 5 | 8 |
| 5 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 100 | 98 | 131 | 129 | 164 | 197 | 231 | 243 | 220 | 193 | 174 | 124 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -4°C Lo -12°C | Hi -2°C Lo -11°C | Hi 7°C Lo -2°C | Hi 13°C Lo 3°C | Hi 20°C Lo 10°C | Hi 25°C Lo 16°C | Hi 27°C Lo 18°C | Hi 27°C Lo 17°C | Hi 23°C Lo 13°C | Hi 15°C Lo 6°C | Hi 7°C Lo -1°C | Hi -0°C Lo -7°C |
| 15 km/h | 15 km/h | 15 km/h | 16 km/h | 14 km/h | 12 km/h | 11 km/h | 11 km/h | 13 km/h | 14 km/h | 15 km/h | 15 km/h |
| 36 mm | 39 mm | 70 mm | 118 mm | 133 mm | 153 mm | 113 mm | 100 mm | 103 mm | 95 mm | 56 mm | 57 mm |
| 89% | 88% | 79% | 77% | 81% | 83% | 81% | 78% | 77% | 73% | 76% | 83% |
| 63% | 61% | 55% | 53% | 47% | 39% | 35% | 31% | 33% | 40% | 44% | 58% |
| 1020 mb | 1020 mb | 1018 mb | 1014 mb | 1014 mb | 1012 mb | 1014 mb | 1014 mb | 1016 mb | 1016 mb | 1018 mb | 1019 mb |
| 19 | 17 | 21 | 20 | 22 | 21 | 24 | 24 | 24 | 25 | 23 | 19 |
| 8 | 7 | 7 | 9 | 9 | 9 | 7 | 7 | 6 | 6 | 5 | 8 |
| 5 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
| 100 | 98 | 131 | 129 | 164 | 197 | 231 | 243 | 220 | 193 | 174 | 124 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.