Charleston International Airport
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Charleston International Airport, SC

January, like December, in Charleston International Airport, South Carolina, is a wintry winter month, with temperature in the range of an average high of 41°F (5°C) and an average low of 23°F (-5°C). The coldest month is January, with an average high-temperature of 41°F (5°C) and an average low-temperature of 23°F (-5°C). Weather in January »
February, the last month of the winter, in Charleston International Airport, is a chilly month, with temperature in the range of an average high of 44.6°F (7°C) and an average low of 24.8°F (-4°C). In Charleston International Airport, the average high-temperature is relatively the same as in January - a frosty 44.6°F (7°C). Weather in February »

March, the first month of the spring, in Charleston International Airport, is a moderate month, with average temperature varying between 33.8°F (1°C) and 57.2°F (14°C). In Charleston International Airport, South Carolina, the average high-temperature rises, from a chilly 44.6°F (7°C) in February, to a moderate 57.2°F (14°C). Weather in March »

April is an enjoyable spring month in Charleston International Airport, South Carolina, with average temperature varying between 66.2°F (19°C) and 41°F (5°C). In Charleston International Airport, the average high-temperature in April increases, from a mild 57.2°F (14°C) in March, to an enjoyable 66.2°F (19°C). Weather in April »

The last month of the spring, May, is a warm month in Charleston International Airport, South Carolina, with average temperature ranging between min 50°F (10°C) and max 75.2°F (24°C). In May, the average high-temperature rises, from an enjoyable 66.2°F (19°C) in April, to a moderately hot 75.2°F (24°C). Weather in May »

The first month of the summer, June, is also a moderately hot month in Charleston International Airport, South Carolina, with average temperature varying between 82.4°F (28°C) and 59°F (15°C). In Charleston International Airport, the average high-temperature slightly increases, from 75.2°F (24°C) in May, to a still moderately hot 82.4°F (28°C). Weather in June »

July in Charleston International Airport, South Carolina, is a hot summer month, with average temperature varying between 64.4°F (18°C) and 86°F (30°C). July is the warmest month, with an average high-temperature of 86°F (30°C) and an average low-temperature of 64.4°F (18°C). Weather in July »

August, the last month of the summer, in Charleston International Airport, is another warm month, with average temperature ranging between max 84.2°F (29°C) and min 62.6°F (17°C). In August, the average high-temperature is almost the same as in July - a warm 84.2°F (29°C). Weather in August »

September, the first month of the autumn, in Charleston International Airport, is also a moderately hot month, with temperature in the range of an average high of 78.8°F (26°C) and an average low of 55.4°F (13°C). Weather in September »

October, like September, is another pleasant autumn month in Charleston International Airport, South Carolina, with average temperature fluctuating between 44.6°F (7°C) and 68°F (20°C). In October, the average high-temperature drops, from a warm 78.8°F (26°C) in September, to a pleasant 68°F (20°C). Weather in October »

November, the last month of the autumn, in Charleston International Airport, is also a moderate month, with temperature in the range of an average low of 35.6°F (2°C) and an average high of 57.2°F (14°C). In November, the average high-temperature drops, from an agreeable 68°F (20°C) in October, to a mild 57.2°F (14°C). Weather in November »

December, the first month of the winter, in Charleston International Airport, is still a chilly month, with average temperature ranging between min 26.6°F (-3°C) and max 46.4°F (8°C). In Charleston International Airport, the average high-temperature drops, from a mild 57.2°F (14°C) in November, to a chilly 46.4°F (8°C). Weather in December »

What is the coldest month in Charleston International Airport?

The coldest month in Charleston International Airport, South Carolina, is January, with an average high-temperature of 41°F (5°C) and an average low-temperature of 23°F (-5°C).

How many days does it rain in Charleston International Airport?

In Charleston International Airport, during the entire year, the rain falls for 151 days and collects up to 41.9" (1065mm) of precipitation.

What is the month with the lowest UV index in Charleston International Airport?

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

What is the month with the most sunshine in Charleston International Airport?

Months with the most sunshine in Charleston International Airport are May through August, with an average of 8h of sunshine.

When are the longest days in Charleston International Airport?

With an average of 14.3h of daylight, June has the longest days of the year.

When is the highest UV index in Charleston International Airport?

Months with the highest UV index in Charleston International Airport, South Carolina, are June through August, with an average maximum UV index of 9.

What is the warmest month in Charleston International Airport?

With an average high-temperature of 86°F (30°C) and an average low-temperature of 64.4°F (18°C), July is the warmest month.

What is the wettest month in Charleston International Airport?

July is the month with the most rainfall in Charleston International Airport. Rain falls for 13 days and accumulates 4.8" (123mm) of precipitation.

What is the driest month in Charleston International Airport?

October is the month with the least rainfall in Charleston International Airport. Rain falls for 10 days and accumulates 2.8" (70mm) of precipitation.

What is the month with the shortest days in Charleston International Airport?

The month with the shortest days in Charleston International Airport, South Carolina, is December, with an average of 10h of daylight.

What is the month with the least sunshine in Charleston International Airport?

December has the least sunshine of the year in Charleston International Airport, with an average of 3h of sunshine.
Average rainfall - Charleston International Airport, SC
Average rainfall days - Charleston International Airport, SC

The month with the highest number of rainy days is January (15 days).
Months with the lowest number of rainy days are September and October (10 days).

Average daylight / Average sunshine - Charleston International Airport, SC
Average UV index - Charleston International Airport, SC