Climate and monthly weather forecast
South Sumter, SC

Weather in January

January, the same as December, is a cool winter month in South Sumter, South Carolina, with an average temperature varying between 52.9°F (11.6°C) and 38.1°F (3.4°C). With an average high-temperature of 52.9°F (11.6°C) and an average low-temperature of 38.1°F (3.4°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in South Sumter, is a moderate month, with an average temperature varying between 41°F (5°C) and 57.7°F (14.3°C). In South Sumter, the average high-temperature in February is almost the same as in January - a moderate 57.7°F (14.3°C). Weather in February »

Weather in March

March, the first month of the spring in South Sumter, is an enjoyable month, with an average temperature fluctuating between 63.9°F (17.7°C) and 46.6°F (8.1°C). In March, the average high-temperature slightly increases from a mild 57.7°F (14.3°C) in February to a comfortable 63.9°F (17.7°C). Weather in March »

Weather in April

April in South Sumter, South Carolina, is a warm spring month, with an average temperature fluctuating between 73.4°F (23°C) and 55°F (12.8°C). In South Sumter, the average high-temperature in April increases from an enjoyable 63.9°F (17.7°C) in March to a warm 73.4°F (23°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in South Sumter, South Carolina, with an average temperature fluctuating between 62.8°F (17.1°C) and 80.2°F (26.8°C). In May, the average high-temperature marginally rises from 73.4°F (23°C) in April to a still moderately hot 80.2°F (26.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in South Sumter, South Carolina, with an average temperature varying between 87.4°F (30.8°C) and 70°F (21.1°C). In South Sumter, the average high-temperature in June marginally rises from a moderately hot 80.2°F (26.8°C) in May to a hot 87.4°F (30.8°C). Weather in June »

Weather in July

July, the same as June, in South Sumter, South Carolina, is another tropical summer month, with an average temperature ranging between min 72.9°F (22.7°C) and max 90.7°F (32.6°C). The warmest month is July, with an average high-temperature of 90.7°F (32.6°C) and an average low-temperature of 72.9°F (22.7°C). The average heat index in July is computed to be a blistering 109.4°F (43°C). Weather in July »

Weather in August

The last month of the summer, August, is also a hot month in South Sumter, South Carolina, with an average temperature fluctuating between 71.4°F (21.9°C) and 88.9°F (31.6°C). In South Sumter, the average high-temperature in August is relatively the same as in July - a still tropical 88.9°F (31.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in South Sumter, South Carolina, with an average temperature fluctuating between 83.7°F (28.7°C) and 66.6°F (19.2°C). In September, the average high-temperature is relatively the same as in August - a warm 83.7°F (28.7°C). Weather in September »

Weather in October

October, like September, in South Sumter, South Carolina, is another warm autumn month, with an average temperature ranging between max 73.8°F (23.2°C) and min 56.7°F (13.7°C). In October, the average high-temperature drops from 83.7°F (28.7°C) in September to a still moderately hot 73.8°F (23.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an enjoyable month in South Sumter, South Carolina, with an average temperature fluctuating between 46.4°F (8°C) and 62.4°F (16.9°C). In South Sumter, the average high-temperature in November decreases from a moderately hot 73.8°F (23.2°C) in October to a comfortable 62.4°F (16.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also a moderate month in South Sumter, South Carolina, with temperature in the range of an average high of 56.3°F (13.5°C) and an average low of 42.3°F (5.7°C). In December, the average high-temperature marginally drops from an enjoyable 62.4°F (16.9°C) in November to a mild 56.3°F (13.5°C). Weather in December »
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FAQ

What is the coldest month in South Sumter?

The coldest month in South Sumter, South Carolina, is January, with an average high-temperature of 52.9°F (11.6°C) and an average low-temperature of 38.1°F (3.4°C).

What are the least humid months in South Sumter?

January and November, with an average relative humidity of 70%, are the least humid months.

What is the driest month in South Sumter?

January is the month with the least rainfall in South Sumter. Rain falls for 10.5 days and accumulates 1.89" (48mm) of precipitation.

How many days does it rain in South Sumter?

In South Sumter, during the entire year, the rain falls for 161.8 days and collects up to 33.35" (847mm) of precipitation.

When does it snow in South Sumter?

Months with snowfall are January through March, November and December.

How many days does it snow in South Sumter?

In South Sumter, South Carolina, during the entire year, snow falls for 1.3 days and aggregates up to 1.06" (27mm) of snow.

What are the months with the lowest UV index in South Sumter?

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in South Sumter, South Carolina.

What is the snowiest month in South Sumter?

February is the month with the most snowfall in South Sumter. Snow falls for 0.6 days and accumulates 0.55" (14mm) of snow.

When is Daylight Saving Time (DST) in South Sumter?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in South Sumter?

In South Sumter, South Carolina, snow does not fall in April through October.

What is the most humid month in South Sumter?

May is the most humid month, with an average relative humidity of 76%.

When are the longest days in South Sumter?

With an average of 14h and 22min of daylight, June has the longest days of the year in South Sumter.

When is the highest UV index in South Sumter?

June and July, with an average maximum UV index of 7, are months with the highest UV index in South Sumter, South Carolina.

What is the warmest month in South Sumter?

The warmest month is July, with an average high-temperature of 90.7°F (32.6°C) and an average low-temperature of 72.9°F (22.7°C).

What month has the most sunshine in South Sumter?

With an average of 10.7h of sunshine, July has the most sunshine of the year.

What is the rainiest month in South Sumter?

The month with the most rainfall in South Sumter is December, when the rain falls for 11 days and typically aggregates up to 3.58" (91mm) of precipitation.

What is the month with the shortest days in South Sumter?

December has the shortest days of the year, with an average of 9h and 56min of daylight.

What is the month with the least sunshine in South Sumter?

December has the least sunshine of the year in South Sumter, South Carolina, with an average of 5.3h of sunshine.

Average temperature
South Sumter, SC

Average temperature - South Sumter, SC

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (52.9°F).

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).

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Average pressure
South Sumter, SC

Average pressure - South Sumter, SC

The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed
South Sumter, SC

Average wind speed - South Sumter, SC

The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity
South Sumter, SC

Average humidity - South Sumter, SC

The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are January and November (70%).

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Average rainfall
South Sumter, SC

Average rainfall - South Sumter, SC

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days
South Sumter, SC

Average rainfall days - South Sumter, SC

The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is October (8.5 days).

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Average snowfall
South Sumter, SC

Average snowfall - South Sumter, SC

The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
South Sumter, SC

Average snowfall days - South Sumter, SC

The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
South Sumter, SC

Average daylight / Average sunshine - South Sumter, SC

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 56min).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days
South Sumter, SC

Average sunshine days - South Sumter, SC

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index
South Sumter, SC

Average UV index - South Sumter, SC

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

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Average visibility
South Sumter, SC

Average visibility - South Sumter, 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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