Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May brings a soft temperature shift, with the average high-temperature nudging from a pleasant 70.9°F (21.6°C) in April to a warm 78.3°F (25.7°C). An average low-temperature of 61.3°F (16.3°C) is recorded during the nights in May.Humidity
In May, the average relative humidity is 77%.Rainfall
In May, the rain falls for 17.6 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. Throughout the year, there are 161 rainfall days, and 32.95" (837mm) of precipitation is accumulated.Snowfall
In Princeton, snow does not fall in April through November.Daylight
In May, the average length of the day is 14h and 3min.On the first day of May in Princeton, sunrise is at 6:20 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:22 pm EDT.
Sunshine
In Princeton, the average sunshine in May is 9.5h.UV index
In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 in May translates into these instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Princeton have in May?
What is the UV index intensity in May?
Average temperature in May
Princeton, NC
- Average high temperature in May: 78.3°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in May: 61.3°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in May
Princeton, NC
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in May
Princeton, NC
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Princeton, NC
- Average humidity in May: 77%
The months with the highest relative humidity are August and September (78%).
The months with the lowest relative humidity are January, March and November (73%).
Average rainfall in May
Princeton, NC
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is August (4.02").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in May
Princeton, NC
- Average rainfall days in May: 17.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in May
Princeton, NC
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Princeton, NC
- 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
Princeton, 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 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in May
Princeton, NC
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in May
Princeton, NC
- Average UV index in May: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Princeton, NC
- Average cloud cover in May: 38
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in May
Princeton, 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).
Princeton, North Carolina, USA
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