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 min 66°F (18.9°C) and max 81.3°F (27.4°C).

Temperature

The arrival of May signals a slight increase in the average high-temperature, moving from a moderately hot 74.8°F (23.8°C) in April to a still warm 81.3°F (27.4°C). The temperature lowers to an average of 66°F (18.9°C) during May nights.

Heat index

May's mean heat index is estimated at a tropical 86°F (30°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

In Highland Park, the average relative humidity in May is 75%.

Rainfall

In Highland Park, in May, during 15.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. 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 is 13h and 52min.
On the first day of May, 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

The average sunshine in May is 10.2h.

UV index

In May, the average daily maximum UV index in Highland Park is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

What is the temperature in May?

In Highland Park, in May, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in May is estimated at 86°F (30°C).

What is the average humidity in May?

In Highland Park, the average relative humidity in May is 75%.

How much does it rain in May?

In May, the rain falls for 15.6 days. Throughout May, 2.95" (75mm) of precipitation is accumulated.

When it does not snow?

In Highland Park, snow does not fall in March through November.

How many hours of daylight does Highland Park have in May?

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

When is the sunrise / sunset in May?

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, sunrise is at 6:12 am and sunset at 8:23 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 10.2h.

How high is the UV index in May?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Highland Park, South Carolina, USA

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