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
The arrival of May brings a temperature shift, with the average high-temperature escalating from a refreshing 65.1°F (18.4°C) in April to a moderately hot 74.8°F (23.8°C). In May, Vienna records an average nighttime temperature of 55.9°F (13.3°C).Humidity
In Vienna, the average relative humidity in May is 76%.Rainfall
In May, the rain falls for 17.3 days. Throughout May, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 162 rainfall days, and 31.65" (804mm) of precipitation is accumulated.Snowfall
In Vienna, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 19min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:45 am and sunset at 8:28 pm EDT.
Sunshine
In May, the average sunshine is 9.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 6 in May translates into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Vienna in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Vienna have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Vienna have in May?
What are the months with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Vienna, VA
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in May
Vienna, 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
Vienna, VA
- Average wind speed in May: 6.1mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Vienna, 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
Vienna, VA
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in May
Vienna, VA
- Average rainfall days in May: 17.3 days
The months with the highest number of rainy days are May and August (17.3 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in May
Vienna, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Vienna, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.6 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
Vienna, VA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in May
Vienna, VA
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in May
Vienna, 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
Vienna, 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
Vienna, 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).
Vienna, Virginia, USA
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