April weather forecastWallula, WA
April
Weather in April
April in Wallula, Washington, is a refreshing spring month, with an average temperature ranging between min 43.3°F (6.3°C) and max 63.1°F (17.3°C).Temperature
The arrival of April sees a shift in the average high-temperature, moving from a fresh 54.1°F (12.3°C) in March to a refreshing 63.1°F (17.3°C). Throughout April, the nighttime temperature averages to a frosty 43.3°F (6.3°C).Humidity
The average relative humidity in April in Wallula is 54%.Rainfall
In Wallula, in April, it is raining for 10.1 days, with typically 0.55" (14mm) of accumulated precipitation. In Wallula, during the entire year, the rain falls for 102.8 days and collects up to 7.32" (186mm) of precipitation.Snowfall
In Wallula, Washington, snow does not fall in April through October.Daylight
In Wallula, the average length of the day in April is 13h and 35min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:24 pm. On the last day of April, sunrise is at 5:42 am and sunset at 8:03 pm PDT.
Sunshine
The average sunshine in April in Wallula, Washington, is 10.2h.UV index
The average daily maximum UV index in April in Wallula is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In April, a daily maximum UV index of 4 leads to the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Wallula, WA
- Average high temperature in April: 63.1°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (38.3°F).
- Average low temperature in April: 43.3°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).
Average pressure in April
Wallula, WA
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in April
Wallula, WA
- Average wind speed in April: 8.5mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in April
Wallula, WA
- Average humidity in April: 54%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).
Average rainfall in April
Wallula, WA
- Average rainfall in April: 0.55"
The wettest months (with the highest rainfall) are March and December (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in April
Wallula, WA
- Average rainfall days in April: 10.1 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in April
Wallula, WA
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Wallula, WA
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Wallula, WA
- Average daylight in April: 13h and 36min
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 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in April
Wallula, WA
- Average sunshine days in April: 17.9 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in April
Wallula, 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
Wallula, WA
- Average cloud cover in April: 33
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in April
Wallula, 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).
