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
A rise in the average high-temperature is observed during April, moving from a cool 52.9°F (11.6°C) in March to a refreshing 62.2°F (16.8°C). Prosser records an average low-temperature of 42.6°F (5.9°C) throughout the month of April.Humidity
In Prosser, the average relative humidity in April is 54%.Rainfall
In April, in Prosser, Washington, the rain falls for 10.5 days. Throughout April, 0.47" (12mm) of precipitation is accumulated. Throughout the year, there are 97.8 rainfall days, and 7.44" (189mm) of precipitation is accumulated.Snowfall
April through August and October are months without snowfall.Daylight
The average length of the day in April in Prosser is 13h and 36min.On the first day of April, sunrise is at 6:36 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:06 pm PDT.
Sunshine
In April, the average sunshine is 10.2h.UV index
In April, the average daily maximum UV index in Prosser, Washington, is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in April translates into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Prosser?
What is the average humidity in April in Prosser?
How many days does it rain in April in Prosser?
When it does not snow in Prosser?
Does it snow in Prosser in April?
What is the average length of the day in April in Prosser?
When are sunrise and sunset in April in Prosser?
How many hours of sunshine does Prosser have in April?
What is the UV index intensity in April in Prosser?
Average temperature in April
Prosser, WA
- Average high temperature in April: 62.2°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in April: 42.6°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in April
Prosser, WA
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in April
Prosser, WA
- Average wind speed in April: 8.6mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).
Average humidity in April
Prosser, WA
- Average humidity in April: 54%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in April
Prosser, WA
- Average rainfall in April: 0.47"
The wettest months (with the highest rainfall) are January and December (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in April
Prosser, WA
- Average rainfall days in April: 10.5 days
The month with the highest number of rainy days is March (11.8 days).
The month with the least rainy days is July (3.6 days).
Average snowfall in April
Prosser, WA
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in April
Prosser, WA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is December (4.6 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in April /
Average sunshine in April
Prosser, WA
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in April: 10h and 1min
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: 5h and 12min).
Average sunshine days in April
Prosser, WA
- Average sunshine days in April: 16.3 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (15.5 days).
Average UV index in April
Prosser, 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
Prosser, WA
- Average cloud cover in April: 33
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in April
Prosser, WA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Prosser, Washington, USA
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