May weather forecast
Highland Park, SC

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Weather in May

May, the last month of the spring in Highland Park, is another warm month, with an average temperature ranging between max 81.3°F (27.4°C) and min 66°F (18.9°C).

Temperature

Highland Park's weather shows a minor temperature rise with the arrival of May, moving from 74.8°F (23.8°C) in April to a still moderately hot 81.3°F (27.4°C). Highland Park observes an average low-temperature of 66°F (18.9°C) during May nights.

Heat index

May's average heat index is calculated to be a tropical 86°F (30°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

The average relative humidity in May is 75%.

Rainfall

In Highland Park, South Carolina, in May, it is raining for 15.6 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 172.6 rainfall days, and 39.13" (994mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall.

Daylight

In May, the average length of the day in Highland Park is 13h and 52min.
On the first day of May in Highland Park, sunrise is at 6:31 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:23 pm EDT.

Sunshine

In May, the average sunshine is 10.2h.

UV index

The average daily maximum UV index in May in Highland Park is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

What are the temperatures in Highland Park in May?

The average high-temperature and low-temperature during May are 81.3°F (27.4°C) and 66°F (18.9°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in May is calculated to be 86°F (30°C).

What is the average humidity in May in Highland Park?

The average relative humidity in May in Highland Park, South Carolina, is 75%.

How much does it rain in Highland Park in May?

In Highland Park, during May, the rain falls for 15.6 days and regularly aggregates up to 2.95" (75mm) of precipitation.

When it does not snow in Highland Park?

March through November are months without snowfall in Highland Park.

What is the average length of the day in May in Highland Park?

In Highland Park, the average day length in May is 13h and 52min.

When is the sunrise / sunset in May in Highland Park?

In May, on the first day of the month, sunrise is at 6:31 am and sunset at 8:02 pm. On the last day of the month, in Highland Park, sunrise is at 6:12 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Highland Park?

The average sunshine duration in May is 10.2h.

How high is the UV index in May in Highland Park?

In Highland Park, South Carolina, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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
Highland Park, SC

Average temperature in May - Highland Park, SC
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in May: 66°F

The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in May
Highland Park, SC

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in May
Highland Park, SC

Average wind speed in May - Highland Park, SC
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in May
Highland Park, SC

Average humidity in May - Highland Park, SC
  • Average humidity in May: 75%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (72%).

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Average rainfall in May
Highland Park, SC

Average rainfall in May - Highland Park, SC
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is August (6.22").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in May
Highland Park, SC

Average rainfall days in May - Highland Park, SC
  • Average rainfall days in May: 15.6 days

The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is November (8.2 days).

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Average snowfall in May
Highland Park, SC

Average snowfall in May - Highland Park, SC
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in May
Highland Park, SC

Average snowfall days in May - Highland Park, SC
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in May /
Average sunshine in May
Highland Park, SC

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in May
Highland Park, SC

Average sunshine days in May - Highland Park, SC
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (5.8 days).

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Average UV index in May
Highland Park, SC

Average UV index in May - Highland Park, SC
  • Average UV index in May: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in May
Highland Park, SC

Average cloud cover in May - Highland Park, SC
  • Average cloud cover in May: 31

The month with the most cloud cover is 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
Highland Park, SC

Average visibility in May - Highland Park, 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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Highland Park, South Carolina, USA

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