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 sea temperature 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
Dahlgren observes a slight uplift in the average high-temperature with the onset of May, adjusting from April's comfortable 66.4°F (19.1°C) to a warm 75°F (23.9°C). Throughout May nights, Dahlgren registers an average low-temperature of 57.2°F (14°C).Humidity
The months with the highest humidity are May and December, with an average relative humidity of 78%.Rainfall
In Dahlgren, in May, during 17.3 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 158.1 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Dahlgren.Ocean temperature
In Dahlgren, the average seawater temperature in May is 58.8°F (14.9°C).Note: Staying in 58.8°F (14.9°C) waters for just a few moments at 55.4°F (13°C) can be harrowing, and below 50°F (10°C) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
In Dahlgren, Virginia, the average length of the day in May is 14h and 16min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:46 am and sunset at 8:25 pm EDT.
Sunshine
In Dahlgren, Virginia, the average sunshine in May is 9.2h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Dahlgren, Virginia. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 during May leads to these advisories:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Dahlgren?
What is the most humid month in Dahlgren?
What is the average humidity in May in Dahlgren?
How much does it rain in Dahlgren in May?
When it does not snow in Dahlgren?
Does it snow in Dahlgren in May?
What is the water temperature in May in Dahlgren?
How many hours of daylight does Dahlgren have in May?
When is the sunrise / sunset in May in Dahlgren?
How many hours of sunshine does Dahlgren have in May?
What are the months with the highest UV index in Dahlgren?
What is the UV index intensity in May in Dahlgren?
Average temperature in May
Dahlgren, VA
- Average high temperature in May: 75°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (42.3°F).
- Average low temperature in May: 57.2°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in May
Dahlgren, VA
- Average pressure in May: 30.02"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
Dahlgren, VA
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Dahlgren, VA
- Average humidity in May: 78%
The months with the highest relative humidity are May and December (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Dahlgren, VA
- Average rainfall in May: 2.72"
The wettest months (with the highest rainfall) are July and August (3.19").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Dahlgren, VA
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in May
Dahlgren, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Dahlgren, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Dahlgren, VA
- Average sea temperature in May: 58.8°F
The best month for swimming (with the highest average sea temperature) is August (78.4°F).
The coldest month (with the lowest average sea temperature) is February (46.7°F).
Average daylight in May /
Average sunshine in May
Dahlgren, 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 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in May
Dahlgren, VA
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in May
Dahlgren, 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 and December (UV index 2).
Average cloud cover in May
Dahlgren, 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 31).
Average visibility in May
Dahlgren, 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).
Dahlgren, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location