Climate and monthly weather forecast
South Sumter, SC

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Weather in January

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

Weather in February

The last month of the winter, February, is a moderate month in South Sumter, South Carolina, with an average temperature fluctuating between 41°F (5°C) and 57.7°F (14.3°C). South Sumter experiences an average high-temperature of a moderate 57.7°F (14.3°C) in February, subtly different from January's 52.9°F (11.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a refreshing month in South Sumter, South Carolina, with an average temperature varying between 46.6°F (8.1°C) and 63.9°F (17.7°C). March marks a minor ascent in the average high-temperature, adjusting from February's mild 57.7°F (14.3°C) to a still refreshing 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 ranging between min 55°F (12.8°C) and max 73.4°F (23°C). South Sumter's transition into April sees a rise in the average high-temperature, advancing from a comfortable 63.9°F (17.7°C) in March to a moderately hot 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 varying between 62.8°F (17.1°C) and 80.2°F (26.8°C). The start of May brings a subtle shift in the average high-temperature, edging up from April's 73.4°F (23°C) to a still moderately hot 80.2°F (26.8°C). Weather in May »

Weather in June

June, the first month of the summer in South Sumter, is a hot month, with an average temperature fluctuating between 70°F (21.1°C) and 87.4°F (30.8°C). June signals a minor shift in the average high-temperature, moving from May's moderately hot 80.2°F (26.8°C) to a hot 87.4°F (30.8°C). Weather in June »

Weather in July

July, like June, is another tropical summer month in South Sumter, South Carolina, 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). In July, the average heat index is estimated at a blisteringly hot 109.4°F (43°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical 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). The high-temperature average in August for South Sumter is a still hot 88.9°F (31.6°C), staying closely aligned with July's conditions. Weather in August »

Weather in September

September, the first month of the autumn in South Sumter, is also a moderately hot month, with an average temperature ranging between max 83.7°F (28.7°C) and min 66.6°F (19.2°C). The average high-temperature during September is a warm 83.7°F (28.7°C), almost matching the conditions of the preceding month. Weather in September »

Weather in October

October, like September, in South Sumter, South Carolina, is another warm autumn month, with an average temperature varying between 56.7°F (13.7°C) and 73.8°F (23.2°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's moderately hot 83.7°F (28.7°C) to a still warm 73.8°F (23.2°C). Weather in October »

Weather in November

November, the last month of the autumn in South Sumter, is another refreshing month, with an average temperature fluctuating between 46.4°F (8°C) and 62.4°F (16.9°C). A shift in the average high-temperature occurs in November, reducing 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

December, the first month of the winter in South Sumter, is also a moderate month, with an average temperature fluctuating between 42.3°F (5.7°C) and 56.3°F (13.5°C). December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's enjoyable 62.4°F (16.9°C) to a moderate 56.3°F (13.5°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in South Sumter?

South Sumter's January weather, marked by an average high temperature of 52.9°F (11.6°C) and an average low temperature of 38.1°F (3.4°C), is the coldest in the year.

What are the least humid months in South Sumter?

The months with the lowest humidity in South Sumter, South Carolina, are January and November, with an average relative humidity of 70%.

What is the driest month in South Sumter?

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

How much does it rain in South Sumter?

Throughout the year, there are 161.8 rainfall days, and 33.35" (847mm) of precipitation is accumulated.

When does it snow in South Sumter?

Months with snowfall in South Sumter, South Carolina, are January through March, November and December.

How much 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 is the month 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.

What is the snowiest month in South Sumter?

The month with the most snowfall is February, when snow falls for 0.6 days and typically aggregates up to 0.55" (14mm) of snow.

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

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.

When it does not snow in South Sumter?

April through October are months without snowfall.

What is the most humid month in South Sumter?

The most humid month in South Sumter is May, with an average relative humidity of 76%.

When are the longest days in South Sumter?

The month with the longest days in South Sumter is June, with an average of 14h and 24min of daylight.

What is the month with 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.

What month is the hottest in South Sumter?

In South Sumter, South Carolina, the average temperatures in July are the highest, with a peak at 90.7°F (32.6°C) and a low of 72.9°F (22.7°C).

What month has the most sunshine in South Sumter?

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

What is the rainiest month in South Sumter?

December is the month with the most rainfall. Rain falls for 11 days and accumulates 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 54min of daylight.

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

With an average of 5.3h of sunshine, December has the least sunshine of the year.

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).

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).

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).

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%).

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").

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).

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").

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).

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 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

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).

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).

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).

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).

South Sumter, South Carolina, USA

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