Our verdict
The best time to visit Harpers Ferry is September-October
In summer, the temperature in Harpers Ferry can rise as high as 29℃ (84℉). The coldest it usually gets in winter-time in Harpers Ferry is around -19℃ (-2℉).
The longest days between sunrise and sunset in Harpers Ferry are usually in July, so if you want to get the most out of your daytime activities, be sure to plan your visit around this time. The wet season in Harpers Ferry usually falls during the months surrounding June each year. It’s not uncommon to get some decent rainfall or light showers during this time, but on some days the weather tends to be fine for a majority of the day, with only a few drops of rain falling from a passing shower.
Continue reading to find out more about when to visit Harpers Ferry, including the climate, seasonal info, what to pack, FAQs, and the best tools to help you plan and book your next vacation.
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Harpers Ferry seasons
Before you continue, it’s important to know when the seasons are in Harpers Ferry as they might be different to yours depending on where in the world you’re travelling from. Harpers Ferry is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Harpers Ferry
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Harpers Ferry for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Harpers Ferry climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Harpers Ferry for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Harpers Ferry in January
- Average temperature: -8℃ (17℉)
- Average high temperature: -5℃ (23℉)
- Average low temperature: -12℃ (11℉)
- Average humidity: 88%
- Average sunny days: 18 days
- Average rainfall: 19mm (1") over 4 days
- Average snow days: 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Harpers Ferry in February
- Average temperature: -6℃ (21℉)
- Average high temperature: -3℃ (27℉)
- Average low temperature: -10℃ (14℉)
- Average humidity: 88%
- Average sunny days: 16 days
- Average rainfall: 23mm (1") over 4 days
- Average snow days: 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Harpers Ferry in March
- Average temperature: 1℃ (35℉)
- Average high temperature: 6℃ (42℉)
- Average low temperature: -3℃ (27℉)
- Average humidity: 80%
- Average sunny days: 16 days
- Average rainfall: 33mm (1") over 10 days
- Average snow days: 7 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Harpers Ferry in April
- Average temperature: 8℃ (46℉)
- Average high temperature: 13℃ (55℉)
- Average low temperature: 3℃ (38℉)
- Average humidity: 77%
- Average sunny days: 14 days
- Average rainfall: 59mm (2") over 14 days
- Average snow days: 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Harpers Ferry in May
- Average temperature: 14℃ (58℉)
- Average high temperature: 19℃ (66℉)
- Average low temperature: 9℃ (49℉)
- Average humidity: 81%
- Average sunny days: 11 days
- Average rainfall: 81mm (3") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in May, make sure you pack a warm jacket or coat.
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Harpers Ferry in June
- Average temperature: 20℃ (67℉)
- Average high temperature: 24℃ (76℉)
- Average low temperature: 15℃ (58℉)
- Average humidity: 84%
- Average sunny days: 10 days
- Average rainfall: 83mm (3") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Harpers Ferry in July
- Average temperature: 22℃ (71℉)
- Average high temperature: 27℃ (80℉)
- Average low temperature: 17℃ (62℉)
- Average humidity: 82%
- Average sunny days: 14 days
- Average rainfall: 49mm (2") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Harpers Ferry in August
- Average temperature: 20℃ (69℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 15℃ (59℉)
- Average humidity: 80%
- Average sunny days: 17 days
- Average rainfall: 44mm (2") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Harpers Ferry in September
- Average temperature: 16℃ (62℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 11℃ (52℉)
- Average humidity: 80%
- Average sunny days: 17 days
- Average rainfall: 50mm (2") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in September, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
Harpers Ferry in October
- Average temperature: 9℃ (49℉)
- Average high temperature: 14℃ (58℉)
- Average low temperature: 5℃ (41℉)
- Average humidity: 76%
- Average sunny days: 19 days
- Average rainfall: 46mm (2") over 9 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in October, make sure you pack a warm jacket or coat.
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Harpers Ferry in November
- Average temperature: 2℃ (36℉)
- Average high temperature: 6℃ (43℉)
- Average low temperature: -1℃ (30℉)
- Average humidity: 77%
- Average sunny days: 19 days
- Average rainfall: 28mm (1") over 6 days
- Average snow days: 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Harpers Ferry in December
- Average temperature: -4℃ (25℉)
- Average high temperature: -1℃ (30℉)
- Average low temperature: -7℃ (19℉)
- Average humidity: 84%
- Average sunny days: 18 days
- Average rainfall: 27mm (1") over 5 days
- Average snow days: 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Harpers Ferry in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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