April weather forecastArlington, WA
April
Weather in April
April is a fresh spring month in Arlington, Washington, with an average temperature fluctuating between 39.4°F (4.1°C) and 53.6°F (12°C).Temperature
As March transitions into April, Arlington records an average high-temperature of a cool 53.6°F (12°C), showing a gentle shift from the preceding month. In Arlington, the average low-temperature during the month of April is a wintry 39.4°F (4.1°C).Humidity
The average relative humidity in April is 81%.Rainfall
In Arlington, in April, it is raining for 19 days, with typically 2.95" (75mm) of accumulated precipitation. In Arlington, during the entire year, the rain falls for 188.6 days and collects up to 34.92" (887mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, Arlington aggregates 0.12" (3mm) of snow. In Arlington, during the entire year, snow falls for 11.6 days and aggregates up to 9.61" (244mm) of snow.Daylight
In April, the average length of the day is 13h and 43min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:39 pm. On the last day of April, sunrise is at 5:49 am and sunset at 8:21 pm PDT.
Sunshine
The average sunshine in April is 7.9h.UV index
In Arlington, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In April, the maximum UV index of 3 suggests these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Arlington, WA
- Average high temperature in April: 53.6°F
The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in April: 39.4°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is February (33.8°F).
Average pressure in April
Arlington, WA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in April
Arlington, WA
- Average wind speed in April: 4.7mph
The windiest months (with the highest average wind speed) are January and November (5.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in April
Arlington, WA
- Average humidity in April: 81%
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in April
Arlington, WA
- Average rainfall in April: 2.95"
The wettest month (with the highest rainfall) is November (4.92").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in April
Arlington, WA
- Average rainfall days in April: 19 days
The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (6.9 days).
Average snowfall in April
Arlington, WA
- Average snowfall in April: 0.12"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Arlington, WA
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is February (4.3 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
Arlington, WA
- Average daylight in April: 13h and 42min
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 54min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in April
Arlington, WA
- Average sunshine days in April: 8.4 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is March (8.1 days).
Average UV index in April
Arlington, 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, October, November and December (UV index 2).
Average cloud cover in April
Arlington, WA
- Average cloud cover in April: 51
The month with the most cloud cover is December (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in April
Arlington, WA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
