May weather forecast
Cornelius, NC

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Weather in May

In May, the city leaves behind the mild spring temperatures, welcoming the onset of summer. Ranging from 58.8°F (14.9°C) to 79°F (26.1°C), the town experiences a significant rise in heat. With 14.1 hours of daylight and longer sunshine hours, the days become noticeably longer. As temperatures continue to climb, June will bring peak summer conditions with even higher temperatures. It’s an excellent period, especially for those who enjoy warm and sunny weather.

Temperature

The shift into May is characterized by a subtle rise in the average high-temperature, transitioning from April's pleasant 70.2°F (21.2°C) to a warm 79°F (26.1°C). Throughout the month of May, Cornelius witnesses an average low-temperature of 58.8°F (14.9°C).

Humidity

The average relative humidity in May is 75%.

Rainfall

In Cornelius, during May, the rain falls for 16.3 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Cornelius, during the entire year, the rain falls for 159.6 days and collects up to 33.07" (840mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Cornelius, North Carolina, the average length of the day in May is 14h and 3min.
On the first day of May, sunrise is at 6:30 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:33 pm EDT.

Sunshine

In Cornelius, the average sunshine in May is 9.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Cornelius in May?

In Cornelius, in May, the average high-temperature is 79°F (26.1°C), and the average low-temperature is 58.8°F (14.9°C).

What is the average humidity in May?

The average relative humidity in May in Cornelius, North Carolina, is 75%.

How many days does it rain in May?

In May, the rain falls for 16.3 days. Throughout May, 2.99" (76mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in May?

In May, the average day length is 14h and 3min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:30 am and sunset at 8:10 pm. On the last day of the month, in Cornelius, sunrise is at 6:09 am and sunset at 8:33 pm EDT.

How many hours of sunshine does Cornelius have in May?

In Cornelius, the average sunshine duration in May is 9.4h.

When is the highest UV index in Cornelius?

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

What is the UV index intensity in May?

In May, the average daily maximum UV index in Cornelius, North Carolina, is 6. A UV Index of 6 to 7 symbolizes a high health threat from 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
Cornelius, NC

Average temperature in May - Cornelius, NC
  • Average high temperature in May: 79°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 (47.5°F).

  • Average low temperature in May: 58.8°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).

Average pressure in May
Cornelius, NC

Average pressure in May - Cornelius, NC
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in May
Cornelius, NC

Average wind speed in May - Cornelius, NC
  • Average wind speed in May: 5.9mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in May
Cornelius, NC

Average humidity in May - Cornelius, NC
  • Average humidity in May: 75%

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are June and July (70%).

Average rainfall in May
Cornelius, NC

Average rainfall in May - Cornelius, NC
  • Average rainfall in May: 2.99"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is October (2.13").

Average rainfall days in May
Cornelius, NC

Average rainfall days in May - Cornelius, NC
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in May
Cornelius, NC

Average snowfall in May - Cornelius, NC
  • Average snowfall in May: 0"

The month with the highest snowfall is December (2.13").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Cornelius, NC

Average snowfall days in May - Cornelius, NC
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.4 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
Cornelius, NC

Average daylight in May / Average sunshine in May - Cornelius, NC
  • 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 48min).

  • Average sunshine in May: 9h and 2min

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 6min).

Average sunshine days in May
Cornelius, NC

Average sunshine days in May - Cornelius, NC
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (11 days).

Average UV index in May
Cornelius, NC

Average UV index in May - Cornelius, NC
  • 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
Cornelius, NC

Average cloud cover in May - Cornelius, NC
  • Average cloud cover in May: 39

The months with the most cloud cover are February, March and December (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 31).

Average visibility in May
Cornelius, NC

Average visibility in May - Cornelius, 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).

Cornelius, North Carolina, USA

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