April weather forecastOnion Creek, WA
April
Weather in April
April in Onion Creek, Washington, is a fresh spring month, with an average temperature fluctuating between 51.6°F (10.9°C) and 30.6°F (-0.8°C).Temperature
April sees a rise in the average high-temperature, climbing from a wintry 39.9°F (4.4°C) in March to a fresh 51.6°F (10.9°C). In Onion Creek, the average nighttime temperature during April is a subzero cold 30.6°F (-0.8°C).Humidity
The average relative humidity in April is 74%.Rainfall
In Onion Creek, in April, during 17.8 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, in Onion Creek, Washington, there are 156.3 rainfall days, and 16.18" (411mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. April is the last month it regularly snows in Onion Creek. During 1.8 snowfall days, in April, Onion Creek aggregates 0.43" (11mm) of snow. In Onion Creek, during the entire year, snow falls for 53.2 days and aggregates up to 25.16" (639mm) of snow.Daylight
The average length of the day in April is 13h and 44min.On the first day of April in Onion Creek, sunrise is at 6:26 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:05 pm PDT.
Sunshine
In April, the average sunshine is 9.5h.UV index
In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Onion Creek, WA
- Average high temperature in April: 51.6°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in April: 30.6°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure in April
Onion Creek, WA
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in April
Onion Creek, WA
- Average wind speed in April: 3.9mph
The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).
Average humidity in April
Onion Creek, WA
- Average humidity in April: 74%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in April
Onion Creek, WA
- Average rainfall in April: 1.46"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in April
Onion Creek, WA
- Average rainfall days in April: 17.8 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in April
Onion Creek, WA
- Average snowfall in April: 0.43"
The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in April
Onion Creek, WA
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Onion Creek, WA
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in April: 9h and 30min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in April
Onion Creek, WA
- Average sunshine days in April: 9.3 days
The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).
Average UV index in April
Onion Creek, WA
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in April
Onion Creek, WA
- Average cloud cover in April: 41
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in April
Onion Creek, 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 (2mi).
