May weather forecast
South Sumter, SC

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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).

Temperature

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). May's average low-temperature reading settles at a refreshing 62.8°F (17.1°C).

Humidity

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

Rainfall

In South Sumter, during May, the rain falls for 15.6 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, in South Sumter, there are 161.8 rainfall days, and 33.35" (847mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in South Sumter.

Daylight

In May, the average length of the day in South Sumter is 13h and 56min.
On the first day of May, sunrise is at 6:31 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:26 pm EDT.

Sunshine

In May, the average sunshine is 9.7h.

UV index

In South Sumter, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 during May translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the average May temperature in South Sumter?

An average high-temperature, in May, in South Sumter, is 80.2°F (26.8°C) and the average low-temperature is 62.8°F (17.1°C).

What is the most humid month in South Sumter?

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

What is the average humidity in May in South Sumter?

In South Sumter, the average relative humidity in May is 76%.

How many days does it rain in May in South Sumter?

In South Sumter, during May, the rain falls for 15.6 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When it does not snow in South Sumter?

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

What is the average length of the day in May in South Sumter?

In May, the average day length in South Sumter, South Carolina, is 13h and 56min.

What time are sunrise and sunset in May in South Sumter?

On the first day of May, sunrise is at 6:31 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:26 pm EDT.

How long on average sun shines in May in South Sumter?

In South Sumter, South Carolina, the average sunshine duration in May is 9.7h.

How high is the UV index in May in South Sumter?

In May, the average daily maximum UV index in South Sumter is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
South Sumter, SC

Average temperature in May - South Sumter, SC
  • Average high temperature in May: 80.2°F

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).

  • Average low temperature in May: 62.8°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 in May
South Sumter, SC

Average pressure in May - South Sumter, SC
  • Average pressure in May: 30.02"Hg

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 in May
South Sumter, SC

Average wind speed in May - South Sumter, SC
  • Average wind speed in May: 7.1mph

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 in May
South Sumter, SC

Average humidity in May - South Sumter, SC
  • Average humidity in May: 76%

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 in May
South Sumter, SC

Average rainfall in May - South Sumter, SC
  • Average rainfall in May: 3.35"

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 in May
South Sumter, SC

Average rainfall days in May - South Sumter, SC
  • Average rainfall days in May: 15.6 days

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 in May
South Sumter, SC

Average snowfall in May - South Sumter, SC
  • Average snowfall in May: 0"

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 in May
South Sumter, SC

Average snowfall days in May - South Sumter, SC
  • Average snowfall days in May: 0 days

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 in May /
Average sunshine in May
South Sumter, SC

Average daylight in May / Average sunshine in May - South Sumter, SC
  • Average daylight in May: 13h and 5min

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).

  • Average sunshine in May: 9h and 4min

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 in May
South Sumter, SC

Average sunshine days in May - South Sumter, SC
  • Average sunshine days in May: 13.4 days

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 in May
South Sumter, SC

Average UV index in May - South Sumter, SC
  • Average UV index in May: 6

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 cloud cover in May
South Sumter, SC

Average cloud cover in May - South Sumter, SC
  • Average cloud cover in May: 36

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

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Average visibility in May
South Sumter, SC

Average visibility in May - South Sumter, SC
  • Average visibility in May: 6mi

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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South Sumter, South Carolina, USA

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