Climate and monthly weather forecastHarpers Ferry, WV
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Harpers Ferry, West Virginia, with an average temperature fluctuating between 38.1°F (3.4°C) and 24.3°F (-4.3°C). Temperature records mark January as the coldest month, with highs averaging 38.1°F (3.4°C) and lows at 24.3°F (-4.3°C). Weather in January »Weather in February
February, the last month of the winter in Harpers Ferry, is another cold month, with an average temperature ranging between min 26.4°F (-3.1°C) and max 42.4°F (5.8°C). A minor adjustment in Harpers Ferry's average high-temperature is noted with the start of February, touching a still icy 42.4°F (5.8°C) from January's 38.1°F (3.4°C). Weather in February »Weather in March
March, the first month of the spring in Harpers Ferry, is a cool month, with an average temperature fluctuating between 50.9°F (10.5°C) and 33.6°F (0.9°C). March's arrival coincides with a marginal rise in the average high-temperature, moving from February's wintry 42.4°F (5.8°C) to a cool 50.9°F (10.5°C). Weather in March »Weather in April
April in Harpers Ferry, West Virginia, is a comfortable spring month, with an average temperature fluctuating between 63.5°F (17.5°C) and 43.3°F (6.3°C). As Harpers Ferry welcomes April, the average high-temperature sees a rise, transitioning from a cool 50.9°F (10.5°C) in March to an enjoyable 63.5°F (17.5°C). Weather in April »Weather in May
May, the last month of the spring in Harpers Ferry, is an agreeable month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 73.2°F (22.9°C). Harpers Ferry sees an increase in average high-temperatures during May, moving from an enjoyable 63.5°F (17.5°C) in April to a pleasant 73.2°F (22.9°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Harpers Ferry, West Virginia, with an average temperature ranging between min 60.4°F (15.8°C) and max 81.3°F (27.4°C). The average high-temperature mildly increases in June, edging from an agreeable 73.2°F (22.9°C) in May to a warm 81.3°F (27.4°C). Weather in June »Weather in July
July is a tropical summer month in Harpers Ferry, West Virginia, with an average temperature varying between 64.9°F (18.3°C) and 86.4°F (30.2°C). Harpers Ferry experiences its highest temperatures in July, with an average peak of 86.4°F (30.2°C) and a low of 64.9°F (18.3°C). In July, the average heat index is appraised at a torrid 98.6°F (37°C). Weather in July »Weather in August
August, the last month of the summer in Harpers Ferry, is another warm month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 83.8°F (28.8°C). The arrival of August brings an average high-temperature of a warm 83.8°F (28.8°C), closely following the temperature pattern of July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Harpers Ferry, West Virginia, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 76.8°F (24.9°C). The arrival of September is marked by a minor reduction in average high-temperature, sliding from a moderately hot 83.8°F (28.8°C) in August to a still warm 76.8°F (24.9°C). Weather in September »Weather in October
October, like September, in Harpers Ferry, West Virginia, is another comfortable autumn month, with an average temperature ranging between max 65.1°F (18.4°C) and min 47.5°F (8.6°C). Harpers Ferry's weather changes with the onset of October, slightly falling from a moderately hot 76.8°F (24.9°C) in September to an enjoyable 65.1°F (18.4°C). Weather in October »Weather in November
November, the last month of the autumn in Harpers Ferry, is another cool month, with temperature in the range of an average high of 52.5°F (11.4°C) and an average low of 36°F (2.2°C). A change in temperatures is noted as October gives way to November, with average highs reducing from a refreshing 65.1°F (18.4°C) to a cool 52.5°F (11.4°C). Weather in November »Weather in December
December, the first month of the winter in Harpers Ferry, is also a frosty month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 43.5°F (6.4°C). Harpers Ferry's December weather features a mild decline in high-temperatures, reducing from a fresh 52.5°F (11.4°C) in November to a frosty 43.5°F (6.4°C). Weather in December »Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with its average high-temperature of 38.1°F (3.4°C) and an average low-temperature of 24.3°F (-4.3°C), holds the record as the coldest month.
January is the month with the least rainfall. Rain falls for 9.1 days and accumulates 1.97" (50mm) of precipitation.
Throughout the year, there are 163.3 rainfall days, and 29.84" (758mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
The month with the most snowfall is January, when snow falls for 6.9 days and typically aggregates up to 3.62" (92mm) of snow.
In Harpers Ferry, West Virginia, during the entire year, snow falls for 20.6 days and aggregates up to 12.13" (308mm) of snow.
The months with the least sunshine are January and February, with an average of 5h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The months with the lowest humidity are April and July, with an average relative humidity of 74%.
The month with the most rainfall is May, when the rain falls for 19.3 days and typically aggregates up to 3.35" (85mm) of precipitation.
May through October are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 14h and 54min of daylight, June has the longest days of the year.
July, characterized by an average high temperature of 86.4°F (30.2°C) and a low temperature of 64.9°F (18.3°C), is generally the warmest month in Harpers Ferry.
July has the most sunshine of the year, with an average of 10.7h of sunshine.
With an average relative humidity of 79%, October is the most humid month.
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
Harpers Ferry, WV
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.1°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Harpers Ferry, WV
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Harpers Ferry, WV
- Average wind speed in January:
7.3mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.3mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.4mph - Average wind speed in September:
5mph - Average wind speed in October:
6.1mph - Average wind speed in November:
6.5mph - Average wind speed in December:
6.7mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity
Harpers Ferry, WV
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall
Harpers Ferry, WV
- Average rainfall in January:
1.97" - Average rainfall in February:
2.13" - Average rainfall in March:
2.32" - Average rainfall in April:
2.56" - Average rainfall in May:
3.35" - Average rainfall in June:
2.4"
- Average rainfall in July:
2.99" - Average rainfall in August:
3.03" - Average rainfall in September:
2.01" - Average rainfall in October:
2.68" - Average rainfall in November:
2.17" - Average rainfall in December:
2.24"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days
Harpers Ferry, WV
- Average rainfall days in January:
9.1 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
16 days - Average rainfall days in May:
19.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
15.7 days - Average rainfall days in September:
13.8 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (9.1 days).
Average snowfall
Harpers Ferry, WV
The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Harpers Ferry, WV
- Average snowfall days in January:
6.9 days - Average snowfall days in February:
5.8 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
3.6 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Harpers Ferry, WV
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 48min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).
Average sunshine days
Harpers Ferry, WV
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
10.7 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.7 days).
Average UV index
Harpers Ferry, WV
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Harpers Ferry, WV
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Harpers Ferry, WV
The months with the highest visibility are February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, May, September, October and December (5mi).
