April weather forecast
Ashburn, VA

Weather in April

April is an enjoyable spring month in Ashburn, Virginia, with an average temperature varying between 64.9°F (18.3°C) and 45.7°F (7.6°C).

Temperature

In Ashburn, the average high-temperature in April increases from a cool 52.5°F (11.4°C) in March to an enjoyable 64.9°F (18.3°C). In April, in Ashburn, the average low-temperature is 45.7°F (7.6°C).

Humidity

In April, the average relative humidity in Ashburn is 72%.

Rainfall

In April, the rain falls for 15.4 days. Throughout April, 2.8" (71mm) of precipitation is accumulated. Throughout the year, in Ashburn, there are 158.1 rainfall days, and 31.46" (799mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Ashburn are January through April, November and December. April is the last month it regularly snows. During 0.3 snowfall days, Ashburn aggregates 0.28" (7mm) of snow. In Ashburn, Virginia, during the entire year, snow falls for 16.7 days and aggregates up to 12.28" (312mm) of snow.

Daylight

In Ashburn, the average length of the day in April is 13h and 15min.
On the first day of the month, sunrise is at 6:53 am and sunset at 7:33 pm. On the last day of April, sunrise is at 6:12 am and sunset at 8:01 pm EDT.

Sunshine

In April, the average sunshine is 8.7h.

UV index

In Ashburn, Virginia, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 in April interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Ashburn?

In April, the average relative humidity in Ashburn, Virginia, is 72%.

How much does it rain in Ashburn in April?

In Ashburn, Virginia, in April, during 15.4 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

What is the last month it snows in Ashburn?

April is the last month it regularly snows. During 0.3 snowfall days, in April, Ashburn aggregates 0.28" (7mm) of snow.

How many hours of daylight does Ashburn have in April?

The average day length in April in Ashburn, Virginia, is 13h and 15min.

When is the sunrise / sunset in April in Ashburn?

On the first day of April in Ashburn, Virginia, sunrise is at 6:53 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:01 pm EDT.

How many hours of sunshine does Ashburn have in April?

The average sunshine duration in April in Ashburn is 8.7h.

What is the UV index intensity in April in Ashburn?

In Ashburn, Virginia, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Ashburn, VA

Average temperature in April - Ashburn, VA
  • Average high temperature in April: 64.9°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in April: 45.7°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

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Average pressure in April
Ashburn, VA

Average pressure in April - Ashburn, VA
  • Average pressure in April: 29.99"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).

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Average wind speed in April
Ashburn, VA

Average wind speed in April - Ashburn, VA
  • Average wind speed in April: 7.4mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in April
Ashburn, VA

Average humidity in April - Ashburn, VA
  • Average humidity in April: 72%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in April
Ashburn, VA

Average rainfall in April - Ashburn, VA
  • Average rainfall in April: 2.8"

The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in April
Ashburn, VA

Average rainfall days in April - Ashburn, VA
  • Average rainfall days in April: 15.4 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in April
Ashburn, VA

Average snowfall in April - Ashburn, VA
  • Average snowfall in April: 0.28"

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").

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Average snowfall days in April
Ashburn, VA

Average snowfall days in April - Ashburn, VA
  • Average snowfall days in April: 0.3 days

The months with the highest number of snowfall days are January and February (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Ashburn, VA

Average daylight in April / Average sunshine in April - Ashburn, VA
  • Average daylight in April: 13h and 15min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • Average sunshine in April: 8h and 42min

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 0min).

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Average sunshine days in April
Ashburn, VA

Average sunshine days in April - Ashburn, VA
  • Average sunshine days in April: 12.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in April
Ashburn, VA

Average UV index in April - Ashburn, VA
  • Average UV index in April: 4

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).

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Average cloud cover in April
Ashburn, VA

Average cloud cover in April - Ashburn, VA
  • Average cloud cover in April: 42

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in April
Ashburn, VA

Average visibility in April - Ashburn, VA
  • Average visibility in April: 6mi

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).

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