May weather forecast
Clemson, SC

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Weather in May

As spring transitions into summer in May, temperatures rise, peaking at 78.8°F (26°C). However, the heat remains manageable compared to the extreme heat prevalent between June and August. The warm weather finds expression in the blooming of summer flowers and the vibrant greenery that surrounds the city. Occasional showers interspersed with sunny days, contribute to the beauty of May. This mild weather allows for engaging outdoor experiences, making May an inviting period to visit Clemson.

Temperature

With the onset of May, Clemson experiences a subtle temperature shift, with the average high-temperature moving from a pleasant 70.7°F (21.5°C) in April to a moderately hot 78.8°F (26°C). An average low-temperature of 58.1°F (14.5°C) is recorded in the month of May in Clemson.

Humidity

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

Rainfall

In Clemson, South Carolina, in May, during 16 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. Throughout the year, in Clemson, South Carolina, there are 164.1 rainfall days, and 37.09" (942mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Clemson.

Daylight

The average length of the day in May in Clemson is 13h and 59min.
On the first day of the month, sunrise is at 6:40 am and sunset at 8:16 pm. On the last day of May, sunrise is at 6:19 am and sunset at 8:38 pm EDT.

Sunshine

In May, the average sunshine in Clemson is 10h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the average May temperature in Clemson?

The high-temperature, in May, in Clemson, records 78.8°F (26°C), while the low-temperature is 58.1°F (14.5°C).

What is the average humidity in May in Clemson?

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

How many days does it rain in May in Clemson?

In Clemson, South Carolina, during May, the rain falls for 16 days and regularly aggregates up to 3.43" (87mm) of precipitation.

When it does not snow in Clemson?

April through October are months without snowfall in Clemson.

What is the average length of the day in May in Clemson?

In Clemson, the average day length in May is 13h and 59min.

When are sunrise and sunset in May in Clemson?

In May, on the first day of the month, sunrise is at 6:40 am and sunset at 8:16 pm. On the last day of the month, in Clemson, South Carolina, sunrise is at 6:19 am and sunset at 8:38 pm EDT.

How many hours of sunshine does Clemson have in May?

In May, the average sunshine duration in Clemson is 10h.

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

May through August, with an average maximum UV index of 6, are months with the highest UV index in Clemson.

What is the UV index reading in May in Clemson?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
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
Clemson, SC

Average temperature in May - Clemson, SC
  • Average high temperature in May: 78.8°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in May: 58.1°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure in May
Clemson, SC

Average pressure in May - Clemson, SC
  • Average pressure in May: 30.03"Hg

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in May
Clemson, SC

Average wind speed in May - Clemson, SC
  • Average wind speed in May: 5.2mph

The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in May
Clemson, SC

Average humidity in May - Clemson, SC
  • Average humidity in May: 76%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in May
Clemson, SC

Average rainfall in May - Clemson, SC
  • Average rainfall in May: 3.43"

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in May
Clemson, SC

Average rainfall days in May - Clemson, SC
  • Average rainfall days in May: 16 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is October (9.5 days).

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Average snowfall in May
Clemson, SC

Average snowfall in May - Clemson, SC
  • Average snowfall in May: 0"

The month with the highest snowfall is December (2.05").
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
Clemson, SC

Average snowfall days in May - Clemson, SC
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (1.4 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
Clemson, SC

Average daylight in May / Average sunshine in May - Clemson, SC
  • Average daylight in May: 14h and 0min

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: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in May
Clemson, SC

Average sunshine days in May - Clemson, SC
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.5 days).

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Average UV index in May
Clemson, SC

Average UV index in May - Clemson, SC
  • Average UV index in May: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in May
Clemson, SC

Average cloud cover in May - Clemson, SC
  • Average cloud cover in May: 33

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).

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Average visibility in May
Clemson, SC

Average visibility in May - Clemson, 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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Clemson, South Carolina, USA

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