Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
With the onset of April, Ashburn experiences a temperature shift, with the average high-temperature moving from a cool 52.5°F (11.4°C) in March to a refreshing 64.9°F (18.3°C). Ashburn experiences an average low-temperature of 45.7°F (7.6°C) in the month of April.Humidity
In Ashburn, the average relative humidity in April is 72%.Rainfall
In Ashburn, in April, it is raining for 15.4 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, 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, in April, Ashburn aggregates 0.28" (7mm) of snow. Throughout the year, there are 16.7 snowfall days, and 12.28" (312mm) of snow is accumulated.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 7:34 pm. On the last day of April, sunrise is at 6:11 am and sunset at 8:02 pm EDT.
Sunshine
In April, the average sunshine is 8.7h.UV index
In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 4 in April translates into these instructions:
Ensure safety - Recommendations to avert sunburn are presented. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
How many hours of daylight does Ashburn have in April?
When are sunrise and sunset in April in Ashburn?
How many hours of sunshine does Ashburn have in April?
What is the UV index intensity in April?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in April /
Average sunshine in April
Ashburn, VA
- Average daylight in April: 13h 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 April: 8h and 4min
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).
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).
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).
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).
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).
Ashburn, Virginia, USA
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