May weather forecast
Chapel Hill, NC

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Red flowers and green trees around the Old Well at the iconic UNC in Chapel Hill, North Carolina
Red flowers and green trees around the Old Well at the iconic UNC in Chapel Hill, North Carolina

Weather in May

May in Chapel Hill brings the onset of summer, characterized by significant warming and occasional, but notable rain showers. Daytime temperatures start pushing towards 80°F (26.7°C), offering the residents a taste of the approaching hot season. Increased humidity levels also signal the beginning of the muggy summer season. Despite occasional rains dampening the cityscape, the ample sunshine and largely clear skies offer the perfect backdrop for outdoor explorations and fun. As Chapel Hill turns lush green, the beauty of May is something the residents look forward to yearly.

Temperature

May sees a marginal temperature increase, moving from an agreeable 70.3°F (21.3°C) in April to a moderately hot 78.6°F (25.9°C). Throughout the month of May, Chapel Hill witnesses an average temperature of 59.4°F (15.2°C).

Humidity

In May, the average relative humidity is 76%.

Rainfall

The month with the most rainfall in Chapel Hill is May, when the rain falls for 14.6 days and typically aggregates up to 1.77" (45mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Chapel Hill, the average length of the day in May is 14h and 5min.
On the first day of the month, sunrise is at 6:22 am and sunset at 8:03 pm. On the last day of May, sunrise is at 6:01 am and sunset at 8:27 pm EDT.

Sunshine

The average sunshine in May is 9.5h.

UV index

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In May, the maximum UV index of 6 suggests these recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the average May temperature in Chapel Hill?

The high-temperature, in May, in Chapel Hill, records 78.6°F (25.9°C), while the low-temperature is 59.4°F (15.2°C).

What is the average humidity in May in Chapel Hill?

In May, the average relative humidity in Chapel Hill, North Carolina, is 76%.

What is the rainiest month in Chapel Hill?

The month with the most rainfall in Chapel Hill is May, when the rain falls for 14.6 days and typically aggregates up to 1.77" (45mm) of precipitation.

How much does it rain in Chapel Hill in May?

In Chapel Hill, North Carolina, during May, the rain falls for 14.6 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Chapel Hill?

April through October are months without snowfall in Chapel Hill.

How many hours of daylight does Chapel Hill have in May?

The average day length in May is 14h and 5min.

What time are sunrise and sunset in May in Chapel Hill?

On the first day of May in Chapel Hill, North Carolina, sunrise is at 6:22 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:27 pm EDT.

How many hours of sunshine does Chapel Hill have in May?

In May, the average sunshine duration in Chapel Hill, North Carolina, is 9.5h.

How high is the UV index in May in Chapel Hill?

The average daily maximum UV index in May in Chapel Hill is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Chapel Hill, NC

Average temperature in May - Chapel Hill, NC
  • Average high temperature in May: 78.6°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (47.7°F).

  • Average low temperature in May: 59.4°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (32°F).

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Average pressure in May
Chapel Hill, NC

Average pressure in May - Chapel Hill, NC
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in May
Chapel Hill, NC

Average wind speed in May - Chapel Hill, NC
  • Average wind speed in May: 6.1mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in May
Chapel Hill, NC

Average humidity in May - Chapel Hill, NC
  • Average humidity in May: 76%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in May
Chapel Hill, NC

Average rainfall in May - Chapel Hill, NC
  • Average rainfall in May: 1.77"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is October (0.83").

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Average rainfall days in May
Chapel Hill, NC

Average rainfall days in May - Chapel Hill, NC
  • Average rainfall days in May: 14.6 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is November (6.4 days).

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Average snowfall in May
Chapel Hill, NC

Average snowfall in May - Chapel Hill, NC
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.47").
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
Chapel Hill, NC

Average snowfall days in May - Chapel Hill, NC
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.5 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
Chapel Hill, NC

Average daylight in May / Average sunshine in May - Chapel Hill, NC
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in May: 9h and 3min

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 24min).

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Average sunshine days in May
Chapel Hill, NC

Average sunshine days in May - Chapel Hill, NC
  • Average sunshine days in May: 13.8 days

The month with the most sunshine days is October (22.3 days).
The months with the least sunshine days are July and August (12.8 days).

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Average UV index in May
Chapel Hill, NC

Average UV index in May - Chapel Hill, NC
  • Average UV index in May: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in May
Chapel Hill, NC

Average cloud cover in May - Chapel Hill, NC
  • Average cloud cover in May: 40

The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 31).

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Average visibility in May
Chapel Hill, NC

Average visibility in May - Chapel Hill, NC
  • 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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Chapel Hill, North Carolina, USA

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