April weather forecastRoyal City, WA
April
Weather in April
April is a comfortable spring month in Royal City, Washington, with an average temperature fluctuating between 61.3°F (16.3°C) and 41.5°F (5.3°C).Temperature
The arrival of April sees a shift in the average high-temperature, moving from a cool 51.4°F (10.8°C) in March to a comfortable 61.3°F (16.3°C). April's nights observe an average temperature of 41.5°F (5.3°C).Humidity
In Royal City, the average relative humidity in April is 52%.Rainfall
In Royal City, in April, during 8.8 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 86.4 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Snowfall
Months with snowfall in Royal City are January through April, September, November and December. April is the last month it regularly snows. During 0.4 snowfall days, in April, Royal City aggregates 0.08" (2mm) of snow. Throughout the year, there are 22.3 snowfall days, and 10" (254mm) of snow is accumulated.Daylight
The average length of the day in April in Royal City is 13h and 38min.On the first day of April, sunrise is at 6:35 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:08 pm PDT.
Sunshine
In April, the average sunshine is 10.3h.UV index
The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In April, a regular UV index of 4 translates into these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Royal City, WA
- Average high temperature in April: 61.3°F
The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (34.5°F).
- Average low temperature in April: 41.5°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).
Average pressure in April
Royal City, WA
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in April
Royal City, WA
- Average wind speed in April: 7.6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in April
Royal City, WA
- Average humidity in April: 52%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in April
Royal City, WA
- Average rainfall in April: 0.39"
The wettest months (with the highest rainfall) are January and December (0.87").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in April
Royal City, WA
- Average rainfall days in April: 8.8 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in April
Royal City, WA
- Average snowfall in April: 0.08"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in April
Royal City, WA
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is December (6.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Royal City, WA
- Average daylight in April: 13h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in April: 10h and 18min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in April
Royal City, WA
- Average sunshine days in April: 19 days
The months with the most sunshine days are July and August (25.8 days).
The month with the least sunshine days is February (16 days).
Average UV index in April
Royal City, WA
- Average UV index in April: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Royal City, WA
- Average cloud cover in April: 32
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in April
Royal City, WA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
