Weather World
Harpers Ferry National Historical Park Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 39°F Lo 25°F | Hi 44°F Lo 28°F | Hi 53°F Lo 35°F | Hi 64°F Lo 44°F | Hi 73°F Lo 54°F | Hi 83°F Lo 62°F | Hi 88°F Lo 68°F | Hi 85°F Lo 66°F | Hi 78°F Lo 59°F | Hi 66°F Lo 48°F | Hi 54°F Lo 37°F | Hi 44°F Lo 31°F |
| 7 mph | 8 mph | 8 mph | 7 mph | 6 mph | 5 mph | 5 mph | 5 mph | 5 mph | 6 mph | 7 mph | 7 mph |
| 3.4 in | 3.9 in | 3.6 in | 4.6 in | 5.4 in | 5.2 in | 4.7 in | 3.8 in | 5.2 in | 4.5 in | 3.4 in | 4.5 in |
| 74% | 76% | 74% | 73% | 78% | 74% | 72% | 73% | 76% | 76% | 74% | 77% |
| 45% | 47% | 46% | 45% | 46% | 35% | 34% | 36% | 38% | 38% | 36% | 46% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in | 30.1 in | 30.1 in |
| 21 | 17 | 21 | 22 | 20 | 20 | 22 | 21 | 23 | 25 | 25 | 22 |
| 7 | 7 | 7 | 8 | 11 | 10 | 9 | 10 | 7 | 6 | 5 | 7 |
| 3 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 2 |
| 163 | 147 | 164 | 167 | 177 | 212 | 231 | 222 | 205 | 198 | 205 | 165 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 4°C Lo -4°C | Hi 6°C Lo -3°C | Hi 12°C Lo 1°C | Hi 18°C Lo 7°C | Hi 23°C Lo 12°C | Hi 28°C Lo 17°C | Hi 31°C Lo 20°C | Hi 30°C Lo 19°C | Hi 26°C Lo 15°C | Hi 19°C Lo 9°C | Hi 12°C Lo 3°C | Hi 7°C Lo -1°C |
| 12 km/h | 12 km/h | 13 km/h | 12 km/h | 10 km/h | 9 km/h | 7 km/h | 8 km/h | 8 km/h | 10 km/h | 11 km/h | 11 km/h |
| 86 mm | 99 mm | 92 mm | 116 mm | 138 mm | 132 mm | 119 mm | 97 mm | 131 mm | 115 mm | 87 mm | 115 mm |
| 74% | 76% | 74% | 73% | 78% | 74% | 72% | 73% | 76% | 76% | 74% | 77% |
| 45% | 47% | 46% | 45% | 46% | 35% | 34% | 36% | 38% | 38% | 36% | 46% |
| 1019 mb | 1019 mb | 1018 mb | 1016 mb | 1016 mb | 1014 mb | 1015 mb | 1016 mb | 1018 mb | 1018 mb | 1021 mb | 1020 mb |
| 21 | 17 | 21 | 22 | 20 | 20 | 22 | 21 | 23 | 25 | 25 | 22 |
| 7 | 7 | 7 | 8 | 11 | 10 | 9 | 10 | 7 | 6 | 5 | 7 |
| 3 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 2 |
| 163 | 147 | 164 | 167 | 177 | 212 | 231 | 222 | 205 | 198 | 205 | 165 |
| 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.