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
April indicates a change in the average high-temperature, moving up from a cool 51.3°F (10.7°C) in March to a comfortable 62.8°F (17.1°C). Vienna's nighttime temperature during April is consistently averaged at a chilly 47.8°F (8.8°C).Humidity
January through April, with an average relative humidity of 75%, are the least humid months.Rainfall
The months with the least rainfall in Vienna are April and May Rain falls for 10.3 days and accumulates 0.79" (20mm) of rain.Snowfall
Months with snowfall in Vienna are January through April, November and December. April is the last month it regularly snows in Vienna, Maryland. During 0.2 snowfall days, in April, Vienna aggregates 0.04" (1mm) of snow. In Vienna, during the entire year, snow falls for 10 days and aggregates up to 1.81" (46mm) of snow.Daylight
In Vienna, the average length of the day in April is 13h and 14min.On the first day of April in Vienna, sunrise is at 6:46 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 7:54 pm EDT.
Sunshine
In April, the average sunshine is 8.9h.UV index
In April, the average daily maximum UV index in Vienna is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 4 in April transforms into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What are the temperatures in Vienna in April?
What are the least humid months in Vienna?
What is the average humidity in April in Vienna?
What is the driest month in Vienna?
How many days does it rain in April in Vienna?
What is the last month it snows in Vienna?
How many hours of daylight does Vienna have in April?
When is the sunrise / sunset in April in Vienna?
How long on average sun shines in April in Vienna?
How high is the UV index in April in Vienna?
Average temperature in April
Vienna, MD
- Average high temperature in April: 62.8°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in April: 47.8°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in April
Vienna, MD
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Vienna, MD
- Average wind speed in April: 9.6mph
The windiest month (with the highest average wind speed) is February (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in April
Vienna, MD
- Average humidity in April: 75%
The months with the highest relative humidity are May, August and September (80%).
The months with the lowest relative humidity are January, February, March and April (75%).
Average rainfall in April
Vienna, MD
- Average rainfall in April: 0.79"
The wettest month (with the highest rainfall) is July (1.46").
The driest months (with the least rainfall) are April and May (0.79").
Average rainfall days in April
Vienna, MD
- Average rainfall days in April: 10.3 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in April
Vienna, MD
- Average snowfall in April: 0.04"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Vienna, MD
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is January (3.2 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
Vienna, MD
- Average daylight in April: 13h and 1min
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 April: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in April
Vienna, MD
- Average sunshine days in April: 17.6 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (14.7 days).
Average UV index in April
Vienna, MD
- 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 and December (UV index 2).
Average cloud cover in April
Vienna, MD
- Average cloud cover in April: 40
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in April
Vienna, MD
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Vienna, Maryland, USA
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