May weather forecastBoone, NC

May
Weather in May
May serves as a bridge between Boone's spring and the approaching summer, marked by warmer temperatures and wet conditions. A major change from the April weather is the cessation of snowfall and an increase in rainfall to 4.09" (104mm). Invitingly warmer days filled with longer sunshine hours can be anticipated during this month. As we approach June, the weather continues in the same welcoming direction, with further increase in temperatures and sunshine hours. The cherry on top for the residents would be the decrease in April’s heightened rainfall level.Temperature
The average high-temperature in Boone, North Carolina, mildly increases in May, edging from an enjoyable 63.3°F (17.4°C) in April to an agreeable 71.2°F (21.8°C). Throughout the month of May, Boone observes an average nighttime temperature of 51.1°F (10.6°C).Humidity
February, May, September and December, with an average relative humidity of 79%, are the most humid months.Rainfall
May is the month with the most rainfall in Boone. Rain falls for 19.1 days and accumulates 4.09" (104mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Boone. May is the last month it regularly snows. During 0.4 snowfall days, in May, Boone aggregates 0.35" (9mm) of snow. In Boone, during the entire year, snow falls for 36.8 days and aggregates up to 28.19" (716mm) of snow.Daylight
In Boone, North Carolina, the average length of the day in May is 14h and 6min.On the first day of May in Boone, sunrise is at 6:32 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:38 pm EDT.
Sunshine
In May, the average sunshine in Boone is 9.6h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index in Boone, North Carolina. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Boone, NC
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in May: 51.1°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in May
Boone, 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 (29.99"Hg).
Average wind speed in May
Boone, NC
- Average wind speed in May: 5.5mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Boone, NC
- Average humidity in May: 79%
The months with the highest relative humidity are February, May, September and December (79%).
The month with the lowest relative humidity is November (75%).
Average rainfall in May
Boone, NC
- Average rainfall in May: 4.09"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in May
Boone, NC
- Average rainfall days in May: 19.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in May
Boone, NC
- Average snowfall in May: 0.35"
The month with the highest snowfall is December (7.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Boone, NC
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Boone, NC
- Average daylight in May: 14h and 6min
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 42min).
- Average sunshine in May: 9h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in May
Boone, NC
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is November (17.3 days).
The months with the least sunshine days are February and May (9.3 days).
Average UV index in May
Boone, NC
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Boone, NC
- Average cloud cover in May: 39
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in May
Boone, NC
- Average visibility in May: 5mi
The months with the highest visibility are June, July and November (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October and December (5mi).





