Climate and monthly weather forecast
South Sumter, SC

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Weather in January

January, the same as December, is another fresh winter month in South Sumter, South Carolina, with temperature in the range of an average low of 3.4°C (38.1°F) and an average high of 11.6°C (52.9°F). January, noted for its average high-temperature of 11.6°C (52.9°F) and an average low-temperature of 3.4°C (38.1°F), is considered the coldest month. Weather in January »

Weather in February

February, the last month of the winter in South Sumter, is a refreshing month, with temperature in the range of an average low of 5°C (41°F) and an average high of 14.3°C (57.7°F). The advent of February brings an average high-temperature of a refreshing 14.3°C (57.7°F), exhibiting minor difference from the previous month. 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 fluctuating between 17.7°C (63.9°F) and 8.1°C (46.6°F). The arrival of March introduces a minor uplift in high-temperatures, adjusting from 14.3°C (57.7°F) in February to a still refreshing 17.7°C (63.9°F). Weather in March »

Weather in April

April is a moderately hot spring month in South Sumter, South Carolina, with an average temperature fluctuating between 12.8°C (55°F) and 23°C (73.4°F). With the beginning of April, South Sumter's average high-temperature sees an increase, transitioning from a refreshing 17.7°C (63.9°F) in March to a moderately hot 23°C (73.4°F). Weather in April »

Weather in May

The last month of the spring, May, is another warm month in South Sumter, South Carolina, with an average temperature fluctuating between 26.8°C (80.2°F) and 17.1°C (62.8°F). The shift into May is characterized by a subtle rise in the average high-temperature, transitioning from April's 23°C (73.4°F) to a still moderately hot 26.8°C (80.2°F). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in South Sumter, South Carolina, with temperature in the range of an average low of 21.1°C (70°F) and an average high of 30.8°C (87.4°F). The coming of June brings a minor shift in South Sumter's weather, with average high-temperatures adjusting from May's warm 26.8°C (80.2°F) to a hot 30.8°C (87.4°F). Weather in June »

Weather in July

July, like June, is another tropical summer month in South Sumter, South Carolina, with an average temperature varying between 32.6°C (90.7°F) and 22.7°C (72.9°F). The highest temperatures are recorded in July, with averages reaching a high of 32.6°C (90.7°F) and a low of 22.7°C (72.9°F). The heat index value during July is estimated at a blistering 43°C (109.4°F). 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 ranging between min 21.9°C (71.4°F) and max 31.6°C (88.9°F). As South Sumter transitions from July to August, the average high-temperatures adjust to a still tropical 31.6°C (88.9°F), nearly the same as the previous 32.6°C (90.7°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in South Sumter, South Carolina, with temperature in the range of an average low of 19.2°C (66.6°F) and an average high of 28.7°C (83.7°F). Transitioning into September, South Sumter experiences an average high-temperature of a moderately hot 28.7°C (83.7°F), marking a minor shift from 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 13.7°C (56.7°F) and 23.2°C (73.8°F). In October, the average high-temperature decreases from 28.7°C (83.7°F) in September to a still warm 23.2°C (73.8°F). Weather in October »

Weather in November

The last month of the autumn, November, is another refreshing month in South Sumter, South Carolina, with an average temperature varying between 8°C (46.4°F) and 16.9°C (62.4°F). With the onset of November, South Sumter experiences a modest temperature adjustment, with the average high-temperature receding from a moderately hot 23.2°C (73.8°F) in October to a comfortable 16.9°C (62.4°F). Weather in November »

Weather in December

December, the first month of the winter in South Sumter, is still a refreshing month, with an average temperature ranging between max 13.5°C (56.3°F) and min 5.7°C (42.3°F). The average high-temperature shows a slight dip in December, from November's comfortable 16.9°C (62.4°F) to a mild 13.5°C (56.3°F). Weather in December »

Frequently asked questions

What is the coldest time of year?

January, with an average high of 11.6°C (52.9°F) and a low of 3.4°C (38.1°F), signifies the coldest month of the year.

What are the least humid months?

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

What is the driest month?

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

How many days does it rain?

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

When does it snow?

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

How many days does it snow?

Throughout the year, there are 1.3 snowfall days, and 27mm (1.06") of snow is accumulated.

What is the month with the lowest UV index?

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

What is the snowiest month?

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

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.

When it does not snow?

April through October are months without snowfall.

What is the most humid month?

The most humid month 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 are the months with the highest UV index?

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

What is the hottest time of year?

The highest temperatures are recorded in July, with averages reaching a high of 32.6°C (90.7°F) and a low of 22.7°C (72.9°F).

What month has the most sunshine?

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

What is the wettest month?

December is the month with the most rainfall. Rain falls for 11 days and accumulates 91mm (3.58") of precipitation.

What is the month with the shortest days?

December has the shortest days of the year in South Sumter, with an average of 9h and 54min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, 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 (32.6°C).
The month with the lowest average high temperature is January (11.6°C).

The month with the highest average low temperature is July (22.7°C).
The coldest month (with the lowest average low temperature) is January (3.4°C).

Average pressure
South Sumter, SC

Average pressure - South Sumter, SC

The months with the highest atmospheric pressure are January and November (1020.6mbar).
The month with the lowest atmospheric pressure is June (1014.8mbar).

Average wind speed
South Sumter, SC

Average wind speed - South Sumter, SC

The windiest month (with the highest average wind speed) is February (13.7km/h).
The calmest month (with the lowest average wind speed) is August (9km/h).

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 (91mm).
The driest month (with the least rainfall) is January (48mm).

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 (14mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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 (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

South Sumter, South Carolina, USA

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