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
The transition from March to April brings a subtle temperature rise, with average high-temperatures increasing from a frosty 49.5°F (9.7°C) to a cool 54.9°F (12.7°C). In April, Mill Creek reports a consistent average low-temperature of 41.2°F (5.1°C) during the nights.Humidity
In Mill Creek, the average relative humidity in April is 79%.Rainfall
In Mill Creek, 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
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 1.1 snowfall days, in April, Mill Creek aggregates 0.28" (7mm) of snow. In Mill Creek, Washington, during the entire year, snow falls for 16.3 days and aggregates up to 10.08" (256mm) of snow.Daylight
In Mill Creek, Washington, the average length of the day in April is 13h and 41min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:39 pm. On the last day of April, in Mill Creek, sunrise is at 5:50 am and sunset at 8:20 pm PDT.
Sunshine
In Mill Creek, Washington, the average sunshine in April is 8.2h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, the average maximum UV index of 3 translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What are April temperatures in Mill Creek?
What is the average humidity in April in Mill Creek?
How much does it rain in Mill Creek in April?
What is the last month it snows in Mill Creek?
What is the average length of the day in April in Mill Creek?
When is the sunrise / sunset in April in Mill Creek?
How long on average sun shines in April in Mill Creek?
What is the UV index intensity in April in Mill Creek?
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 4min
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 1min
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).
Mill Creek, Washington, USA
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