May weather forecastArlington, VA
May
Weather in May
May in Arlington brings an unmistakable indication of the imminent summer season. The weather displays a significant rise in temperature and humidity from the previous months, ironically coupled with increased rainfalls. Longer daylight hours serve as an invitation to explore the outdoors, while the UV index escalates to 6, prompting high protection against harm from the sun. Temperatures can reach a peak of 74.5°F (23.6°C), urging locals and tourists alike to unpack their summer clothes.Temperature
As Arlington enters May, the average high-temperature increases from the a comfortable 65.1°F (18.4°C) of April to a warm 74.5°F (23.6°C). In the month of May, the nighttime temperature dips to a steady average of 57°F (13.9°C).Humidity
The most humid month in Arlington is May, with an average relative humidity of 76%.Rainfall
In Arlington, during May, the rain falls for 16.3 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Arlington, there are 149.1 rainfall days, and 26.14" (664mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Arlington, the average length of the day in May is 14h and 19min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:01 pm. On the last day of May, sunrise is at 5:45 am and sunset at 8:27 pm EDT.
Sunshine
The average sunshine in May in Arlington is 8.9h.UV index
In May, the average daily maximum UV index in Arlington is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 6 during May translates into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Arlington, VA
- Average high temperature in May: 74.5°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in May: 57°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in May
Arlington, 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
Arlington, VA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Arlington, VA
- Average humidity in May: 76%
The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in May
Arlington, VA
- Average rainfall in May: 2.64"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in May
Arlington, VA
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in May
Arlington, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Arlington, VA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (3.8 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
Arlington, 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: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in May
Arlington, VA
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in May
Arlington, VA
- Average UV index in May: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Arlington, 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 30).
Average visibility in May
Arlington, 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).
