May weather forecastCastle Heights, VA
May
Weather in May
May, the last month of the spring in Castle Heights, is a moderately hot month, with an average temperature ranging between min 58.6°F (14.8°C) and max 77.7°F (25.4°C).Temperature
The start of May brings a subtle rise in the average high-temperature, moving from a pleasant 69.4°F (20.8°C) in April to a warm 77.7°F (25.4°C). Castle Heights registers a consistent average low-temperature of 58.6°F (14.8°C) during May.Humidity
The average relative humidity in May is 77%.Rainfall
May is the month with the most rainfall. Rain falls for 15.8 days and accumulates 2.13" (54mm) of precipitation.Snowfall
April through November are months without snowfall in Castle Heights.Daylight
The average length of the day in May in Castle Heights is 14h and 8min.On the first day of May, sunrise is at 6:18 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:25 pm EDT.
Sunshine
In May, the average sunshine in Castle Heights is 9.4h.UV index
The months with the highest UV index in Castle Heights are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 6 in May leads to these recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Castle Heights, VA
- Average high temperature in May: 77.7°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in May: 58.6°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in May
Castle Heights, VA
- 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).
Average wind speed in May
Castle Heights, VA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Castle Heights, VA
- Average humidity in May: 77%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).
Average rainfall in May
Castle Heights, VA
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in May
Castle Heights, VA
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (8.3 days).
Average snowfall in May
Castle Heights, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Castle Heights, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.5 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
Castle Heights, VA
- 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 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in May
Castle Heights, VA
- Average sunshine days in May: 13 days
The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is July (12 days).
Average UV index in May
Castle Heights, VA
- 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
Castle Heights, VA
- 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 July (Cloud cover 31).
Average visibility in May
Castle Heights, VA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
