May weather forecastLorton, VA
May
Weather in May
The last month of the spring, May, is a warm month in Lorton, Virginia, with an average temperature varying between 56.3°F (13.5°C) and 75.2°F (24°C).Temperature
May's arrival coincides with a temperature rise, moving from April's enjoyable 65.5°F (18.6°C) to a moderately hot 75.2°F (24°C). Throughout May, the temperature tends to fall to a consistent average low of 56.3°F (13.5°C).Humidity
The average relative humidity in May in Lorton is 76%.Rainfall
In May, in Lorton, the rain falls for 17.8 days. Throughout May, 3.15" (80mm) of precipitation is accumulated. In Lorton, during the entire year, the rain falls for 156.5 days and collects up to 30.83" (783mm) of precipitation.Snowfall
In Lorton, Virginia, snow does not fall in May through November.Daylight
In May, the average length of the day is 14h and 18min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:01 pm. On the last day of May, in Lorton, sunrise is at 5:45 am and sunset at 8:27 pm EDT.
Sunshine
The average sunshine in May is 9h.UV index
The months with the highest UV index in Lorton are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 6 during May morphs into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lorton, VA
- Average high temperature in May: 75.2°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in May
Lorton, VA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Lorton, VA
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Lorton, VA
- Average humidity in May: 76%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in May
Lorton, VA
- Average rainfall in May: 3.15"
The wettest month (with the highest rainfall) is August (3.98").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in May
Lorton, VA
- Average rainfall days in May: 17.8 days
The months with the highest number of rainy days are May and August (17.8 days).
The month with the least rainy days is November (7.7 days).
Average snowfall in May
Lorton, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in May
Lorton, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Lorton, VA
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in May
Lorton, VA
- Average sunshine days in May: 11.2 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is August (10.4 days).
Average UV index in May
Lorton, 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, November and December (UV index 2).
Average cloud cover in May
Lorton, VA
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Lorton, VA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
