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 March gives way to April, the average high-temperature displays a slight ascent, adjusting from a cold 37.6°F (3.1°C) to a frosty 46.2°F (7.9°C). Roslyn experiences a mean low-temperature of 29.7°F (-1.3°C) during April.Humidity
In April, the average relative humidity is 80%.Rainfall
In Roslyn, in April, it is raining for 18.3 days, with typically 1.93" (49mm) of accumulated precipitation. In Roslyn, during the entire year, the rain falls for 161.2 days and collects up to 28.46" (723mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Roslyn, in April, snow falls for 5.3 days, with typically accumulated 1.97" (50mm) of snow. Throughout the year, in Roslyn, there are 69.9 snowfall days, and 60.24" (1530mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 39min.On the first day of April, sunrise is at 6:40 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:14 pm PDT.
Sunshine
In April, the average sunshine is 9.2h.UV index
The average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 in April converts into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Roslyn in April?
What is the average humidity in April?
How much does it rain in April?
How many days does it snow in April?
What is the average length of the day in April?
When are sunrise and sunset in April?
How many hours of sunshine does Roslyn have in April?
How high is the UV index in April?
Average temperature in April
Roslyn, WA
- Average high temperature in April: 46.2°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in April: 29.7°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in April
Roslyn, WA
- Average pressure in April: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in April
Roslyn, WA
- Average wind speed in April: 5.8mph
The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in April
Roslyn, WA
- Average humidity in April: 80%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in April
Roslyn, WA
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is January (4.41").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in April
Roslyn, WA
- Average rainfall days in April: 18.3 days
The months with the highest number of rainy days are March and April (18.3 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in April
Roslyn, WA
- Average snowfall in April: 1.97"
The month with the highest snowfall is January (16.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Roslyn, WA
- Average snowfall days in April: 5.3 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Roslyn, WA
- Average daylight in April: 13h and 4min
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 36min).
- Average sunshine in April: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in April
Roslyn, WA
- Average sunshine days in April: 8.5 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in April
Roslyn, WA
- Average UV index in April: 2
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 1).
Average cloud cover in April
Roslyn, WA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in April
Roslyn, WA
- Average visibility in April: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (3mi).
Roslyn, Washington, USA
Weather forecast for your location
2. Allow the app to use your location