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
With the onset of April, Snoqualmie Pass's average high-temperature experiences a slight rise, moving from March's icy 37°F (2.8°C) to a chilly 43.7°F (6.5°C). In Snoqualmie Pass, April nights witness a steady temperature drop to a subzero cold 29.3°F (-1.5°C).Humidity
In April, the average relative humidity is 86%.Rainfall
In Snoqualmie Pass, in April, during 13.8 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Snoqualmie Pass, during the entire year, the rain falls for 127.9 days and collects up to 28.58" (726mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Snoqualmie Pass, during April, snow falls for 18.3 days and regularly aggregates up to 10.39" (264mm) of snow. Throughout the year, there are 135.3 snowfall days, and 134.33" (3412mm) of snow is accumulated.Daylight
In Snoqualmie Pass, the average length of the day in April is 13h and 40min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:36 pm. On the last day of April, sunrise is at 5:48 am and sunset at 8:16 pm PDT.
Sunshine
In April, the average sunshine in Snoqualmie Pass is 6.5h.UV index
In April, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 in April translates into this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is April?
What is the average humidity in April in Snoqualmie Pass?
How many days does it rain in April?
How many days does it snow in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Snoqualmie Pass have in April?
What is the UV index reading in April?
Average temperature in April
Snoqualmie Pass, WA
- Average high temperature in April: 43.7°F
The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (30.2°F).
- Average low temperature in April: 29.3°F
The month with the highest average low temperature is August (45°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).
Average pressure in April
Snoqualmie Pass, WA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in April
Snoqualmie Pass, WA
- Average wind speed in April: 4.7mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in April
Snoqualmie Pass, WA
- Average humidity in April: 86%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is July (69%).
Average rainfall in April
Snoqualmie Pass, WA
- Average rainfall in April: 2.09"
The wettest month (with the highest rainfall) is January (4.21").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in April
Snoqualmie Pass, WA
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in April
Snoqualmie Pass, WA
- Average snowfall in April: 10.39"
The month with the highest snowfall is January (27.72").
The months with the least snowfall are July and August (0").
Average snowfall days in April
Snoqualmie Pass, WA
- Average snowfall days in April: 18.3 days
The month with the highest number of snowfall days is December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Snoqualmie Pass, 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 30min).
- Average sunshine in April: 6h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).
Average sunshine days in April
Snoqualmie Pass, WA
- Average sunshine days in April: 6.3 days
The month with the most sunshine days is August (20.2 days).
The month with the least sunshine days is February (6 days).
Average UV index in April
Snoqualmie Pass, 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
Snoqualmie Pass, WA
- Average cloud cover in April: 64
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in April
Snoqualmie Pass, WA
- Average visibility in April: 4mi
The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March and December (3mi).
Snoqualmie Pass, Washington, USA
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