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
Ariel's transition into April is noticed by a slight rise in the average high-temperature, advancing from a chilly 48.4°F (9.1°C) in March to a fresh 54.3°F (12.4°C). During April, Ariel records an average temperature of 36.7°F (2.6°C) at night.Humidity
In Ariel, the average relative humidity in April is 83%.Rainfall
In Ariel, in April, it is raining for 19.6 days, with typically 4.13" (105mm) of accumulated precipitation. In Ariel, during the entire year, the rain falls for 182.3 days and collects up to 48.11" (1222mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In April, the average length of the day is 13h and 35min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:39 pm. On the last day of April, in Ariel, Washington, sunrise is at 5:57 am and sunset at 8:17 pm PDT.
Sunshine
In April, the average sunshine is 6.2h.UV index
In Ariel, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 3 in April leads to these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Ariel?
What is the average humidity in April in Ariel?
How many days does it rain in April in Ariel?
When it does not snow in Ariel?
Does it snow in Ariel in April?
What is the average length of the day in April in Ariel?
When are sunrise and sunset in April in Ariel?
How many hours of sunshine does Ariel have in April?
How high is the UV index in April in Ariel?
Average temperature in April
Ariel, WA
- Average high temperature in April: 54.3°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (40.6°F).
- Average low temperature in April: 36.7°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in April
Ariel, WA
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in April
Ariel, WA
- Average wind speed in April: 4.7mph
The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in April
Ariel, WA
- Average humidity in April: 83%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in April
Ariel, WA
- Average rainfall in April: 4.13"
The wettest month (with the highest rainfall) is January (7.64").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in April
Ariel, WA
- Average rainfall days in April: 19.6 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in April
Ariel, WA
- Average snowfall in April: 0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Ariel, WA
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is February (4.2 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
Ariel, WA
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in April: 6h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in April
Ariel, WA
- Average sunshine days in April: 8.9 days
The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in April
Ariel, WA
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in April
Ariel, WA
- Average cloud cover in April: 62
The months with the most cloud cover are February and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in April
Ariel, WA
- Average visibility in April: 4mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Ariel, Washington, USA
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