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
Richland's April weather indicates a minor ascent in high-temperatures, adjusting from an icy 41.9°F (5.5°C) in March to a fresh 50.5°F (10.3°C). Richland's nighttime temperature during April is consistently averaged at a subzero cold 31.1°F (-0.5°C).Humidity
In April, the average relative humidity is 69%.Rainfall
In Richland, during April, the rain falls for 14.3 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Richland, Oregon, during the entire year, the rain falls for 113.5 days and collects up to 12.56" (319mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Richland, Oregon, during April, snow falls for 3.5 days and regularly aggregates up to 1.18" (30mm) of snow. Throughout the year, there are 65.1 snowfall days, and 38.9" (988mm) of snow is accumulated.Daylight
In Richland, the average length of the day in April is 13h and 31min.On the first day of April, sunrise is at 6:27 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 7:53 pm PDT.
Sunshine
The average sunshine in April is 10.4h.UV index
In Richland, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In April, the maximum UV index of 3 suggests these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. To guard against the harmful effects of the Sun, minimize exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How many days does it rain in April?
How much does it snow in April?
How many hours of daylight does Richland have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Richland have in April?
What is the UV index reading in April?
Average temperature in April
Richland, OR
- Average high temperature in April: 50.5°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (30.7°F).
- Average low temperature in April: 31.1°F
The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).
Average pressure in April
Richland, OR
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in April
Richland, OR
- Average wind speed in April: 6.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (5.4mph).
Average humidity in April
Richland, OR
- Average humidity in April: 69%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (40%).
Average rainfall in April
Richland, OR
- Average rainfall in April: 1.02"
The wettest month (with the highest rainfall) is December (1.77").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in April
Richland, OR
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is August (4.4 days).
Average snowfall in April
Richland, OR
- Average snowfall in April: 1.18"
The month with the highest snowfall is December (10.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Richland, OR
- Average snowfall days in April: 3.5 days
The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Richland, OR
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in April
Richland, OR
- Average sunshine days in April: 12.6 days
The month with the most sunshine days is July (22.7 days).
The months with the least sunshine days are February and March (11.3 days).
Average UV index in April
Richland, OR
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Richland, OR
- Average cloud cover in April: 35
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in April
Richland, OR
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Richland, Oregon, USA
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