April weather forecastMill Creek, WA
April
Weather in April
April in Mill Creek, Washington, is a fresh spring month, with an average temperature fluctuating between 54.9°F (12.7°C) and 41.2°F (5.1°C).Temperature
Mill Creek's weather in April presents a minor rise in the average high-temperature, moving from a chilly 49.5°F (9.7°C) in March to a fresh 54.9°F (12.7°C). Mill Creek's nighttime temperature in April falls to an average of 41.2°F (5.1°C).Humidity
The average relative humidity in April is 79%.Rainfall
In Mill Creek, Washington, in April, during 16.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Mill Creek, during the entire year, the rain falls for 173.1 days and collects up to 26.02" (661mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 1.1 snowfall days, in April, Mill Creek aggregates 0.28" (7mm) of snow. Throughout the year, there are 16.3 snowfall days, and 10.08" (256mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 41min.On the first day of April, sunrise is at 6:45 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:20 pm PDT.
Sunshine
The average sunshine in April is 8.2h.UV index
In April, the average daily maximum UV index 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 this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Mill Creek, WA
- Average high temperature in April: 54.9°F
The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in April: 41.2°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.4°F).
Average pressure in April
Mill Creek, WA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in April
Mill Creek, WA
- Average wind speed in April: 5.2mph
The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in April
Mill Creek, WA
- Average humidity in April: 79%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (72%).
Average rainfall in April
Mill Creek, WA
- Average rainfall in April: 2.13"
The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in April
Mill Creek, WA
- Average rainfall days in April: 16.8 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in April
Mill Creek, WA
- Average snowfall in April: 0.28"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Mill Creek, WA
- Average snowfall days in April: 1.1 days
The month with the highest number of snowfall days is February (5.2 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
Mill Creek, 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 30min).
- Average sunshine in April: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in April
Mill Creek, WA
- Average sunshine days in April: 9.7 days
The month with the most sunshine days is August (22.6 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in April
Mill Creek, 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, November and December (UV index 2).
Average cloud cover in April
Mill Creek, WA
- Average cloud cover in April: 48
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in April
Mill Creek, WA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
