April weather forecastVashon, WA
April
Weather in April
April is a moderate spring month in Vashon, Washington, with temperature in the range of an average low of 39.7°F (4.3°C) and an average high of 56.7°F (13.7°C).Temperature
As April sets, the average high-temperature shows a slight increase, moving up from a fresh 51.1°F (10.6°C) in March to a mild 56.7°F (13.7°C). An average nighttime temperature of 39.7°F (4.3°C) is observed during April.Humidity
The average relative humidity in April is 79%.Rainfall
In Vashon, in April, during 14.9 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Vashon, during the entire year, the rain falls for 138.2 days and collects up to 14.09" (358mm) of precipitation.Snowfall
In Vashon, snow does not fall in April through October.Daylight
In April, the average length of the day is 13h and 40min.On the first day of April, sunrise is at 6:46 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:20 pm PDT.
Sunshine
In Vashon, the average sunshine in April is 7.9h.UV index
The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Vashon, WA
- Average high temperature in April: 56.7°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 (43.5°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in April
Vashon, WA
- Average pressure in April: 30.05"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in April
Vashon, WA
- Average wind speed in April: 4.8mph
The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.6mph).
Average humidity in April
Vashon, WA
- Average humidity in April: 79%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (68%).
Average rainfall in April
Vashon, WA
- Average rainfall in April: 1.22"
The wettest month (with the highest rainfall) is December (2.2").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in April
Vashon, WA
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is April (14.9 days).
The month with the least rainy days is August (5.7 days).
Average snowfall in April
Vashon, WA
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Vashon, WA
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is February (3.4 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
Vashon, WA
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- 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
Vashon, WA
- Average sunshine days in April: 13.2 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (13 days).
Average UV index in April
Vashon, WA
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Vashon, WA
- Average cloud cover in April: 52
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in April
Vashon, WA
- Average visibility in April: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).
