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
As April begins, there's a slight increase in the average high-temperature, moving from an icy 42.6°F (5.9°C) in March to a fresh 50.4°F (10.2°C). Nighttime temperatures in April average to a freezing cold 29.3°F (-1.5°C).Humidity
The average relative humidity in April is 70%.Rainfall
In Mount Vernon, in April, during 14.9 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Mount Vernon, during the entire year, the rain falls for 127.7 days and collects up to 17.09" (434mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In April, in Mount Vernon, Oregon, it is snowing for 4.6 days. Throughout April, 1.69" (43mm) of snow is accumulated. In Mount Vernon, Oregon, during the entire year, snow falls for 62.5 days and aggregates up to 39.17" (995mm) of snow.Daylight
In Mount Vernon, the average length of the day in April is 13h and 30min.On the first day of April, sunrise is at 6:35 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:00 pm PDT.
Sunshine
In Mount Vernon, the average sunshine in April is 10.2h.UV index
In April, the average daily maximum UV index in Mount Vernon, Oregon, is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 in April interprets into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What are the temperatures in Mount Vernon in April?
What is the average humidity in April in Mount Vernon?
How much does it rain in Mount Vernon in April?
How many days does it snow in April in Mount Vernon?
What is the average length of the day in April in Mount Vernon?
When is the sunrise / sunset in April in Mount Vernon?
How many hours of sunshine does Mount Vernon have in April?
What is the UV index reading in April in Mount Vernon?
Average temperature in April
Mount Vernon, OR
- Average high temperature in April: 50.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).
- Average low temperature in April: 29.3°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in April
Mount Vernon, OR
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in April
Mount Vernon, OR
- Average wind speed in April: 6.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in April
Mount Vernon, OR
- Average humidity in April: 70%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).
Average rainfall in April
Mount Vernon, OR
- Average rainfall in April: 1.85"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in April
Mount Vernon, OR
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in April
Mount Vernon, OR
- Average snowfall in April: 1.69"
The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Mount Vernon, OR
- Average snowfall days in April: 4.6 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Mount Vernon, OR
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in April
Mount Vernon, OR
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).
Average UV index in April
Mount Vernon, OR
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in April
Mount Vernon, OR
- Average cloud cover in April: 37
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in April
Mount Vernon, OR
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Mount Vernon, Oregon, USA
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