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 shift from March to April introduces a subtle increase in the average high-temperature, moving from an icy 39.2°F (4°C) to a frosty 47.8°F (8.8°C). During the nights in April, an average low-temperature of 30°F (-1.1°C) is observed.Humidity
In Plain, the average relative humidity in April is 77%.Rainfall
In Plain, in April, it is raining for 17.7 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, in Plain, there are 159.9 rainfall days, and 25.63" (651mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Plain, in April, during 5.2 snowfall days, 1.54" (39mm) of snow is typically accumulated. In Plain, Washington, during the entire year, snow falls for 73.4 days and aggregates up to 57.99" (1473mm) of snow.Daylight
In Plain, the average length of the day in April is 13h and 41min.On the first day of April, sunrise is at 6:39 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:14 pm PDT.
Sunshine
The average sunshine in April in Plain is 9.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 3 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Plain?
What is the average humidity in April in Plain?
How many days does it rain in April in Plain?
How much does it snow in Plain in April?
What is the average length of the day in April in Plain?
When is the sunrise / sunset in April in Plain?
How long on average sun shines in April in Plain?
What is the UV index intensity in April in Plain?
Average temperature in April
Plain, WA
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (30.6°F).
- Average low temperature in April: 30°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in April
Plain, WA
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in April
Plain, WA
- Average wind speed in April: 5mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in April
Plain, WA
- Average humidity in April: 77%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in April
Plain, WA
- Average rainfall in April: 1.65"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in April
Plain, WA
- Average rainfall days in April: 17.7 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in April
Plain, WA
- Average snowfall in April: 1.54"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Plain, WA
- Average snowfall days in April: 5.2 days
The month with the highest number of snowfall days is December (17 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Plain, WA
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in April: 9h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Plain, WA
- Average sunshine days in April: 8.5 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in April
Plain, 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 and February (UV index 1).
Average cloud cover in April
Plain, WA
- Average cloud cover in April: 41
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in April
Plain, WA
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Plain, Washington, USA
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