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's presence marks an average high-temperature of a cool 53.1°F (11.7°C), subtly varied from March's 48.2°F (9°C). In Mount Vernon, April's nights observe an average temperature dip to a cold 41.9°F (5.5°C).Humidity
The average relative humidity in April is 80%.Rainfall
In Mount Vernon, in April, it is raining for 19.2 days, with typically 2.91" (74mm) of accumulated precipitation. Throughout the year, there are 185.2 rainfall days, and 34.72" (882mm) of precipitation is accumulated.Snowfall
Months with snowfall in Mount Vernon are January through April, November and December. April is the last month it regularly snows in Mount Vernon, Washington. During 0.2 snowfall days, in April, Mount Vernon aggregates 0.16" (4mm) of snow. In Mount Vernon, Washington, during the entire year, snow falls for 9.9 days and aggregates up to 7.91" (201mm) of snow.Daylight
In April, the average length of the day in Mount Vernon is 13h and 43min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:40 pm. On the last day of April, in Mount Vernon, sunrise is at 5:49 am and sunset at 8:22 pm PDT.
Sunshine
The average sunshine in April is 7.7h.UV index
The average daily maximum UV index in April in Mount Vernon is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 3 in April translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the usual temperature for Mount Vernon in April?
What is the average humidity in April in Mount Vernon?
How much does it rain in Mount Vernon in April?
What is the last month it snows in Mount Vernon?
How many hours of daylight does Mount Vernon have in April?
What time are sunrise and sunset in April in Mount Vernon?
How many hours of sunshine does Mount Vernon have in April?
How high is the UV index in April in Mount Vernon?
Average temperature in April
Mount Vernon, WA
- Average high temperature in April: 53.1°F
The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in April: 41.9°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).
Average pressure in April
Mount Vernon, WA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in April
Mount Vernon, WA
- Average wind speed in April: 6mph
The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in April
Mount Vernon, WA
- Average humidity in April: 80%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in April
Mount Vernon, WA
- Average rainfall in April: 2.91"
The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in April
Mount Vernon, WA
- Average rainfall days in April: 19.2 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).
Average snowfall in April
Mount Vernon, WA
- Average snowfall in April: 0.16"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Mount Vernon, WA
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is February (3.6 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
Mount Vernon, WA
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in April: 7h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in April
Mount Vernon, WA
- Average sunshine days in April: 8.9 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).
Average UV index in April
Mount Vernon, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Mount Vernon, WA
- Average cloud cover in April: 52
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in April
Mount Vernon, WA
- 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).
Mount Vernon, Washington, USA
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