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
May shows a rise in the average high-temperature, moving from April's enjoyable 65.3°F (18.5°C) to a moderately hot 74.8°F (23.8°C). Nighttime temperature in Merrifield experiences an average drop to a refreshing 56.7°F (13.7°C) in May.Humidity
In Merrifield, the average relative humidity in May is 76%.Rainfall
In Merrifield, Virginia, in May, it is raining for 18.2 days, with typically 3.15" (80mm) of accumulated precipitation. In Merrifield, during the entire year, the rain falls for 161.2 days and collects up to 31.54" (801mm) of precipitation.Snowfall
May through October are months without snowfall in Merrifield.Daylight
The average length of the day in May in Merrifield, Virginia, is 14h and 19min.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 Merrifield, sunrise is at 5:45 am and sunset at 8:27 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 in Merrifield. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Merrifield?
What is the average humidity in May in Merrifield?
How much does it rain in Merrifield in May?
When it does not snow in Merrifield?
Does it snow in Merrifield in May?
What is the average length of the day in May in Merrifield?
When is the sunrise / sunset in May in Merrifield?
How many hours of sunshine does Merrifield have in May?
When is the highest UV index in Merrifield?
What is the UV index intensity in May in Merrifield?
Average temperature in May
Merrifield, VA
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in May: 56.7°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 (27.1°F).
Average pressure in May
Merrifield, 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
Merrifield, VA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Merrifield, VA
- Average humidity in May: 76%
The month with the highest relative humidity is October (77%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in May
Merrifield, VA
- Average rainfall in May: 3.15"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in May
Merrifield, VA
- Average rainfall days in May: 18.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in May
Merrifield, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Merrifield, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.9 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
Merrifield, VA
- Average daylight in May: 14h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in May
Merrifield, VA
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in May
Merrifield, 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
Merrifield, VA
- Average cloud cover in May: 42
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
Merrifield, 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).
Merrifield, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location