May weather forecast
Greenville, SC

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The scenic Greenville City of South Carolina, with a view of the curved bridge over a small river flowing through the city
The scenic Greenville City of South Carolina, with a view of the curved bridge over a small river flowing through the city

Weather in May

With temperatures rising, May in Greenville is typified by clear, sunny days. The mild temperatures of April ascend further with night temperatures around 58.6°F (14.8°C). Evenings in May still get cool but are significantly warmer in contrast to previous months. Greenville's climate in May is characterized by a combination of other features such as increased humidity and clear visibility. Unpredictable weather patterns from torrential rainfall to clear skylines make for an interesting month.

Temperature

Greenville, South Carolina, perceives a slight temperature ascent during May, with average high-temperatures adjusting from an agreeable 70.7°F (21.5°C) in April to a warm 79.2°F (26.2°C). In the month of May, Greenville's average low-temperature falls to a mild 58.6°F (14.8°C).

Humidity

The average relative humidity in May in Greenville is 75%.

Rainfall

In Greenville, during May, the rain falls for 16.4 days and regularly aggregates up to 3.5" (89mm) of precipitation. In Greenville, during the entire year, the rain falls for 163.5 days and collects up to 35.47" (901mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in May is 14h and 0min.
On the first day of May, sunrise is at 6:38 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:37 pm EDT.

Sunshine

In May, the average sunshine in Greenville 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 exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 6 during May leads to these advisories:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Greenville?

During May, Greenville experiences an average high-temperature of 79.2°F (26.2°C) and a low-temperature of 58.6°F (14.8°C).

What is the average humidity in May in Greenville?

The average relative humidity in May is 75%.

How many days does it rain in May in Greenville?

In Greenville, South Carolina, during May, the rain falls for 16.4 days and regularly aggregates up to 3.5" (89mm) of precipitation.

When it does not snow in Greenville?

April through October are months without snowfall in Greenville.

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

The average day length in May in Greenville is 14h and 0min.

When are sunrise and sunset in May in Greenville?

On the first day of May in Greenville, sunrise is at 6:38 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:37 pm EDT.

How long on average sun shines in May in Greenville?

The average sunshine duration in May in Greenville is 10h.

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

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

What is the UV index intensity in May in Greenville?

In Greenville, South Carolina, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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
Greenville, SC

Average temperature in May - Greenville, SC
  • Average high temperature in May: 79.2°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in May: 58.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).

Average pressure in May
Greenville, SC

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

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

Average wind speed in May
Greenville, SC

Average wind speed in May - Greenville, SC
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in May
Greenville, SC

Average humidity in May - Greenville, SC
  • Average humidity in May: 75%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

Average rainfall in May
Greenville, SC

Average rainfall in May - Greenville, SC
  • Average rainfall in May: 3.5"

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in May
Greenville, SC

Average rainfall days in May - Greenville, SC
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is October (9.4 days).

Average snowfall in May
Greenville, SC

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

The month with the highest snowfall is December (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Greenville, SC

Average snowfall days in May - Greenville, 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).

Average daylight in May /
Average sunshine in May
Greenville, SC

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

The month with the longest days is June (Average daylight: 14h and 30min).
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 30min).

Average sunshine days in May
Greenville, SC

Average sunshine days in May - Greenville, SC
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (10.2 days).

Average UV index in May
Greenville, SC

Average UV index in May - Greenville, 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).

Average cloud cover in May
Greenville, SC

Average cloud cover in May - Greenville, 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).

Average visibility in May
Greenville, SC

Average visibility in May - Greenville, 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).

Greenville, South Carolina, USA

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