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
May's onset is marked by a subtle temperature increase, moving from a pleasant 70.2°F (21.2°C) in April to a warm 77.9°F (25.5°C). In the month of May, Castalia records a consistent average low-temperature of 60.4°F (15.8°C).Humidity
In Castalia, North Carolina, the average relative humidity in May is 77%.Rainfall
In Castalia, in May, it is raining for 17.3 days, with typically 3.11" (79mm) of accumulated precipitation. In Castalia, during the entire year, the rain falls for 160.1 days and collects up to 33.11" (841mm) of precipitation.Snowfall
In Castalia, snow does not fall in April through November.Daylight
In May, the average length of the day is 14h and 5min.On the first day of May in Castalia, North Carolina, sunrise is at 6:18 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:23 pm EDT.
Sunshine
The average sunshine in May is 9.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 6 during May translates into the following directions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Castalia in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Castalia have in May?
When is the sunrise / sunset in May in Castalia?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Castalia, NC
- Average high temperature in May: 77.9°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 (47.7°F).
- Average low temperature in May: 60.4°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in May
Castalia, NC
- Average pressure in May: 30.02"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
Castalia, NC
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in May
Castalia, NC
- Average humidity in May: 77%
The month with the highest relative humidity is September (78%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in May
Castalia, NC
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is October (2.13").
Average rainfall days in May
Castalia, NC
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in May
Castalia, NC
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.54").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Castalia, NC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2 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
Castalia, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in May
Castalia, NC
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in May
Castalia, NC
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Castalia, NC
- Average cloud cover in May: 39
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 32).
Average visibility in May
Castalia, 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).
Castalia, North Carolina, USA
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