Climate and monthly weather forecast
Charles Town, WV

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The climate of Charles Town

Situated in West Virginia, USA, Charles Town experiences a humid subtropical climate, classified as 'Cfa' as per Köppen climate classification. This indicates the presence of high temperature and increased humidity, with substantial precipitation throughout the year.

When delving into the weather makeup, the average high temperature fluctuates from a chilly 37.9°F (3.3°C) in January to a warm 86.5°F (30.3°C) in July. Similarly, the low temperature ranges, moderately, from 24.1°F (-4.4°C) in January to 64.4°F (18°C) in July. The humidity levels relatively rotate between 73 and 78%, indicating a reliably moist environment all year round.

Regarding precipitation, rainfall measures from 1.89" (48mm) in September to a high of 3.15" (80mm) in May, July, and August. Precipitous days vary from 9.2 in January to a maximum of 17.8 in May. The months from May to August display a unique, consistent magnitude of rainfall, thereby emphasizing the humid nature of this region throughout most of the year.

Snow is a common sight during colder months, with January receiving the highest amount at 4.17" (106mm), and snowfall days peaking to 7.8. From May to September, the city experiences a snow-free environment due to rising temperatures.

Coupled with the high humidity and rainfall, one notices a considerable amount of cloud coverage, a hefty 46% in January and December. A high cloud coverage signifies cloudy or overcast skies for most parts of the year.

The best time to visit Charles Town

Given the figures on temperature, sunshine hours, and rainfall; June, July, and August appear to be the best times to visit Charles Town. These months showcase high temperatures between 73.4°F (23°C) and 86.5°F (30.3°C), creating an agreeable atmosphere for outdoor activities. Adding to the pleasant scenery, the sunshine hours peak to a high of 10.7 hours in July, offering bountiful sunlight for exploration. Rainfall, although slightly elevated at 3.15" (80mm), doesn't severely disrupt most outdoor activities.

The worst time to visit Charles Town

Contrastingly, January stands as the least favorable time to visit Charles Town. Temperatures descend to a low of 24.1°F (-4.4°C), and high temperatures scarcely reach 37.9°F (3.3°C). Additionally, snowfall is at its peak with up to 4.17" (106mm) of snow covering the city. The city receives a limited amount of daylight, only 9.8 hours, and a mere 5.1 hours of sunshine.

Spring weather in Charles Town

Spring ushers in a period of moderate temperatures with highs ranging from 51.1°F (10.6°C) in March to 73.4°F (23°C) in May. Lows, during the same period, fluctuate from 33.6°F (0.9°C) to 52.5°F (11.4°C). This period experiences increased daylight with 13.3 hours in April extending to 14.3 hours in May. Rainfall figures relatively elevate, increasing from 2.4" (61mm) in March to a high 3.15" (80mm) in May.

Summer weather in Charles Town

Delving into summer, temperatures elevate markedly with highs ranging from 73.4°F (23°C) in June to the annual peak of 86.5°F (30.3°C) in July. Corresponding night-time lows, rather comfortably, range from 60.4°F (15.8°C) to 64.4°F (18°C). Despite the higher temperatures and rainfall reaching 3.15" (80mm), sunshine hours peak, reaching up to 10.7 hours per day in July. The city experiences the maximum daylight of the year during this season, peaking at 14.9 hours in June.

Autumn weather in Charles Town

Autumn denotes a transition from the sweltering summer to the cold winter. Temperatures commence their descent with highs ranging from 77°F (25°C) in September to 52.2°F (11.2°C) by November. Corresponding lows also decline from 56.8°F (13.8°C) to 35.8°F (2.1°C) within the same interval. Rainfall peaks to 2.64" (67mm) in October but reverts to 2.17" (55mm) in November. Despite the receding daylight hours, the city continues to enjoy a reasonable amount of sunshine, between 8.9 hours in September to 5.8 hours in November.

Winter weather in Charles Town

Finally, winter brings with it a chilly atmosphere, with temperature highs oscillating between 52.2°F (11.2°C) in December and 37.9°F (3.3°C) in January. Lows drop further, reaching a freezing 24.1°F (-4.4°C) in January. Quite noticeably, snowfall peaks at 4.17" (106mm) in January with up to 7.8 days of snow anticipated. Despite the chilly conditions, the winter sun brings some relief with up to 5.1 hours of sunshine, despite the reduced daylight hours of 10 in December to 9.5 in January.

Weather in January

January in Charles Town, West Virginia begins the year with a wintry chill as temperatures can drop as low as 24.1°F (-4.4°C) and reach no higher than 37.9°F (3.3°C), marking this month as one of the coldest. The city experiences snowfall making it a winter wonderland. Weather in January »

Weather in February

As the calendar turns to February, Charles Town gradually starts to thaw, but winter's grip remains. With a slightly increased average high temperature compared to January, the crisp winter air and snowy landscapes persist. February witnesses nearly 10.7 hours of daylight, a prevalence of cloudy conditions, and a continued low UV index. Weather in February »

Weather in March

In March, seasonal changes are evident with a more significant increase in temperatures. The transition from winter to spring is marked by occasional rain showers and a reduction in snowfall, compared to the preceding months. Daylight hours continue their upward trend, providing ample time for outdoor activities. Weather in March »

Weather in April

April embraces spring fully with significant leaps in average temperatures and reduced snowfall, compared to March. The moderate climate, coupled with Charles Town's extended daylight hours, encourages outdoor exploration and recreational activities. Weather in April »

Weather in May

In May, Charles Town witnesses the arrival of warmer temperatures, a marked change from the nippy season that characterized the previous month, April. Tender spring showers dominate much of May, with a significant increase in rainfall. Weather in May »

Weather in June

As summer commences in June, Charles Town experiences its highest temperatures yet, a substantial rise from May. Scorching midday suns bring increased daylight hours, making it ideal for sunbathing and leisurely picnics. However, despite no snowfall and less cloudiness compared to previous months, June experiences its fair share of summer showers. Weather in June »

Weather in July

July brings the heat in Charles Town with an average high of 86.5°F (30.3°C), marking it as the hottest month of the year. Compared to June, days are akin with similar daylight and sunshine hours. Despite the scorching sun, July experiences frequent showers, and it is advised to always carry an umbrella. Weather in July »

Weather in August

In August, temperatures marginally plummet compared to July’s peaks, signalling the onset of the end of the summer season. Despite the slight dip, August continues to favour warm weather lovers. Frequent showers remain characteristic of this month. Weather in August »

Weather in September

Summer transitions to fall in September, with a notable decrease in temperatures relative to August. The changing season brings reduced daylight and sunshine hours, hinting at the upcoming autumnal equinox. Minimalistic rainfall is noticeable, and cloud cover begins to increase. Weather in September »

Weather in October

October in Charles Town sees a further decrease in temperatures, solidifying the entrance of fall and departure of the summer season, prevalent in September. Characterized by decreasing daylight hours and a significant plunge in temperature, the beginning of fall chill fills the air. Weather in October »

Weather in November

November weather in Charles Town marks the transition from fall to winter with a significant reduction in average temperatures relative to October. The city experiences an increase in rainfall and a mild revisit of snowfall, making it a wetter month. Weather in November »

Weather in December

December welcomes winter as temperatures drop sharply with lows around 30.7°F (-0.7°C), contrasting with November's mild cool. Snowfall consists of going up to 2.8" (71mm), embarking upon the arrival of a frosty season. Compared to its predecessor month, it has increased snowfall and reduced daylight hours. Weather in December »
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

The coldest time of the year is January, with temperatures averaging a high of 37.9°F (3.3°C) and a low of 24.1°F (-4.4°C).

How many days does it rain?

In Charles Town, during the entire year, the rain falls for 162.1 days and collects up to 30.59" (777mm) of precipitation.

When does it snow?

January through May, November and December are months with snowfall.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 7.8 days and typically aggregates up to 4.17" (106mm) of snow.

How many days does it snow?

Throughout the year, there are 23.9 snowfall days, and 15.55" (395mm) of snow is accumulated.

What is the month with the least sunshine?

The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.

What are the months with the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

When is Daylight Saving Time (DST)?

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.

What is the most humid month?

May, October and December, with an average relative humidity of 78%, are most humid months.

What is the wettest month?

The wettest months are May, July and August, with an average 3.15" (80mm) of rainfall.

What are the months with the highest UV index in Charles Town?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When it does not snow in Charles Town?

In Charles Town, snow does not fall in June through October.

When are the longest days?

June has the longest days of the year, with an average of 14h and 54min of daylight.

What time of the year is the hottest?

July, noted for its average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 64.4°F (18°C), is considered the warmest month.

What is the least humid month?

July is the least humid month, with an average relative humidity of 73%.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.7h of sunshine.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 12.1 days and typically collects 1.89" (48mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

Average temperature
Charles Town, WV

Average temperature - Charles Town, WV

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

Average pressure
Charles Town, WV

Average pressure - Charles Town, WV

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
Charles Town, WV

Average wind speed - Charles Town, WV

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity
Charles Town, WV

Average humidity - Charles Town, WV

The months with the highest relative humidity are May, October and December (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall
Charles Town, WV

Average rainfall - Charles Town, WV

The wettest months (with the highest rainfall) are May, July and August (3.15").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days
Charles Town, WV

Average rainfall days - Charles Town, WV

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.2 days).

Average snowfall
Charles Town, WV

Average snowfall - Charles Town, WV

The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
Charles Town, WV

Average snowfall days - Charles Town, WV

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine
Charles Town, WV

Average daylight / Average sunshine - Charles Town, WV

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).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

Average sunshine days
Charles Town, WV

Average sunshine days - Charles Town, WV

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.2 days).

Average UV index
Charles Town, WV

Average UV index - Charles Town, 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 visibility
Charles Town, WV

Average visibility - Charles Town, WV

The months with the highest visibility are February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, May, September and October (5mi).

Charles Town, West Virginia, USA

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