May weather forecastWashington, VA
May
Weather in May
May, the last month of the spring in Washington, is an agreeable month, with temperature in the range of an average low of 52.2°F (11.2°C) and an average high of 73°F (22.8°C).Temperature
The shift from April to May sees an increase in the average high-temperature, transitioning from a comfortable 63.1°F (17.3°C) to a pleasant 73°F (22.8°C). Washington witnesses a consistent average low-temperature of 52.2°F (11.2°C) throughout May.Humidity
In Washington, the average relative humidity in May is 77%.Rainfall
May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 2.64" (67mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Washington. During 0.2 snowfall days, in May, Washington aggregates 0.04" (1mm) of snow. Throughout the year, in Washington, there are 17.4 snowfall days, and 9.72" (247mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 18min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:05 pm. On the last day of May, sunrise is at 5:49 am and sunset at 8:31 pm EDT.
Sunshine
The average sunshine in May is 9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in May translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Washington, VA
- Average high temperature in May: 73°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in May: 52.2°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in May
Washington, 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
Washington, VA
- Average wind speed in May: 5.5mph
The windiest months (with the highest average wind speed) are February and March (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in May
Washington, VA
- Average humidity in May: 77%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in May
Washington, VA
- Average rainfall in May: 2.64"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in May
Washington, VA
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in May
Washington, VA
- Average snowfall in May: 0.04"
The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Washington, VA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Washington, 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 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in May
Washington, VA
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is August (11.4 days).
Average UV index in May
Washington, 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, February, November and December (UV index 2).
Average cloud cover in May
Washington, 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
Washington, VA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, April, June, July, August and November (6mi).
The months with the lowest visibility are March, May, September, October and December (5mi).
