Climate and monthly weather forecast
Summerville, SC

Weather in January

January, like December, is a moderate winter month in Summerville, South Carolina, with temperature in the range of an average high of 56.8°F (13.8°C) and an average low of 40.1°F (4.5°C). The coldest month is January, with an average high-temperature of 56.8°F (13.8°C) and an average low-temperature of 40.1°F (4.5°C). Weather in January »

Weather in February

February, the last month of the winter in Summerville, is an enjoyable month, with an average temperature fluctuating between 61.2°F (16.2°C) and 43.5°F (6.4°C). In February, the average high-temperature is practically the same as in January - a comfortable 61.2°F (16.2°C). Weather in February »

Weather in March

The first month of the spring, March, is still a comfortable month in Summerville, South Carolina, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 66.7°F (19.3°C). In March, the average high-temperature slightly increases from an enjoyable 61.2°F (16.2°C) in February to a still comfortable 66.7°F (19.3°C). Weather in March »

Weather in April

April is a warm spring month in Summerville, South Carolina, with temperature in the range of an average low of 57°F (13.9°C) and an average high of 75.4°F (24.1°C). In April, the average high-temperature slightly increases from an enjoyable 66.7°F (19.3°C) in March to a warm 75.4°F (24.1°C). Weather in April »

Weather in May

May, the last month of the spring in Summerville, is also a moderately hot month, with an average temperature ranging between max 82°F (27.8°C) and min 64.6°F (18.1°C). In May, the average high-temperature marginally rises from a moderately hot 75.4°F (24.1°C) in April to a still warm 82°F (27.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Summerville, South Carolina, with temperature in the range of an average low of 71.6°F (22°C) and an average high of 88.7°F (31.5°C). In Summerville, the average high-temperature in June slightly increases from a warm 82°F (27.8°C) in May to a hot 88.7°F (31.5°C). Weather in June »

Weather in July

July, the same as June, in Summerville, South Carolina, is another tropical summer month, with an average temperature ranging between min 74.7°F (23.7°C) and max 91.2°F (32.9°C). July is the warmest month, with an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 74.7°F (23.7°C). The average heat index in July is estimated at a life-threatening hot 113°F (45°C). Weather in July »

Weather in August

August, the last month of the summer in Summerville, is also a hot month, with an average temperature fluctuating between 90.1°F (32.3°C) and 73.8°F (23.2°C). In August, the average high-temperature is essentially the same as in July - a still hot 90.1°F (32.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Summerville, South Carolina, with an average temperature fluctuating between 85.5°F (29.7°C) and 69.3°F (20.7°C). In September, the average high-temperature is relatively the same as in August - a warm 85.5°F (29.7°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Summerville, South Carolina, with an average temperature fluctuating between 76.6°F (24.8°C) and 59°F (15°C). In October, the average high-temperature marginally drops from 85.5°F (29.7°C) in September to a still warm 76.6°F (24.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an enjoyable month in Summerville, South Carolina, with an average temperature varying between 48.6°F (9.2°C) and 66°F (18.9°C). In November, the average high-temperature drops from a warm 76.6°F (24.8°C) in October to an enjoyable 66°F (18.9°C). Weather in November »

Weather in December

December, the first month of the winter in Summerville, is also a moderate month, with an average temperature fluctuating between 60.4°F (15.8°C) and 44.1°F (6.7°C). In December, the average high-temperature slightly decreases from an enjoyable 66°F (18.9°C) in November to a moderate 60.4°F (15.8°C). Weather in December »
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FAQ

What is the coldest month in Summerville?

January is the coldest month, with an average high-temperature of 56.8°F (13.8°C) and an average low-temperature of 40.1°F (4.5°C).

What is the least humid month in Summerville?

January and March, with an average relative humidity of 72%, are the least humid months in Summerville.

What is the driest month in Summerville?

January is the month with the least rainfall in Summerville. Rain falls for 5.7 days and accumulates 0.28" (7mm) of precipitation.

How much does it rain in Summerville?

In Summerville, during the entire year, the rain falls for 120.6 days and collects up to 11.18" (284mm) of precipitation.

When does it snow in Summerville?

January and February are months with snowfall.

When does it snow the most in Summerville?

The months with the most snowfall are January and February, with an average 0.04" (1mm) of accumulated snow.

How many days does it snow in Summerville?

In Summerville, during the entire year, snow falls for 0.5 days and aggregates up to 0.08" (2mm) of snow.

What are the months with the lowest UV index in Summerville?

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

When it does not snow in Summerville?

In Summerville, snow does not fall in March through December.

When is Daylight Saving Time (DST) in Summerville?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Summerville, South Carolina, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the month with the highest UV index in Summerville?

May through August, with an average maximum UV index of 7, are months with the highest UV index.

When are the longest days in Summerville?

June has the longest days of the year, with an average of 14h and 18min of daylight.

What is the warmest month in Summerville?

With an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 74.7°F (23.7°C), July is the warmest month in Summerville.

What month has the most sunshine in Summerville?

The month with the most sunshine is July, with an average of 10.9h of sunshine.

What is the wettest month in Summerville?

August is the month with the most rainfall in Summerville, South Carolina. Rain falls for 18.3 days and accumulates 2.09" (53mm) of precipitation.

What is the most humid month in Summerville?

The most humid month in Summerville, South Carolina, is December, with an average relative humidity of 78%.

What is the month with the shortest days in Summerville?

With an average of 10h and 1min of daylight, December has the shortest days of the year in Summerville, South Carolina.

What is the month with the least sunshine in Summerville?

With an average of 5.5h of sunshine, December has the least sunshine of the year.

Average temperature
Summerville, SC

Average temperature - Summerville, SC

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (56.8°F).

The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

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Average pressure
Summerville, SC

Average pressure - Summerville, SC

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed
Summerville, SC

Average wind speed - Summerville, SC

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity
Summerville, SC

Average humidity - Summerville, SC

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (72%).

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Average rainfall
Summerville, SC

Average rainfall - Summerville, SC

The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is January (0.28").

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Average rainfall days
Summerville, SC

Average rainfall days - Summerville, SC

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall
Summerville, SC

Average snowfall - Summerville, SC

The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days
Summerville, SC

Average snowfall days - Summerville, SC

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

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Average daylight / Average sunshine
Summerville, SC

Average daylight / Average sunshine - Summerville, SC

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 1min).

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days
Summerville, SC

Average sunshine days - Summerville, SC

The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is August (7.4 days).

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Average UV index
Summerville, SC

Average UV index - Summerville, SC

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover
Summerville, SC

Average cloud cover - Summerville, SC

The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are July and October (Cloud cover 29).

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Average visibility
Summerville, SC

Average visibility - Summerville, SC

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

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