April weather forecast
Kennewick, WA

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Yellow night lights on the pillars of the iconic Benton Franklin Intercounty Bridge passing over the Columbia River in Kennewick, Washington
Yellow night lights on the pillars of the iconic Benton Franklin Intercounty Bridge passing over the Columbia River in Kennewick, Washington

Weather in April

The transition from March to April in Kennewick brings warmer temperatures and longer days. A significant warmth envelops the city, with high temperatures around 63.1°F (17.3°C). This is the time when the city truly steps into spring; flowering plants sprout, adding color to the city. April prepares Kennewick for the impending summer, with increased daylight hours and lower chances of rainfall. Clearer skies and improved visibility make it an excellent time to explore the city.

Temperature

A shift in the average high-temperature is noticeable in April, changing from a cool 54.1°F (12.3°C) in March to an enjoyable 63.1°F (17.3°C). In the month of April, Kennewick's average low-temperature falls to a chilly 43.3°F (6.3°C).

Humidity

In April, the average relative humidity is 54%.

Rainfall

In Kennewick, during April, the rain falls for 10.1 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 102.8 rainfall days, and 7.32" (186mm) of precipitation is accumulated.

Snowfall

In Kennewick, snow does not fall in April through October.

Daylight

In Kennewick, the average length of the day in April is 13h and 36min.
On the first day of April, sunrise is at 6:34 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:04 pm PDT.

Sunshine

The average sunshine in April in Kennewick, Washington, is 10.2h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In April, the maximum UV index of 4 suggests this advice:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average April temperature?

During April, Kennewick experiences an average high-temperature of 63.1°F (17.3°C) and a low-temperature of 43.3°F (6.3°C).

What is the average humidity in April in Kennewick?

In Kennewick, the average relative humidity in April is 54%.

How many days does it rain in April?

In Kennewick, in April, during 10.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

When it does not snow?

In Kennewick, snow does not fall in April through October.

Does it snow in April?

In April, it doesn't snow. March is the latest month when it typically snows.

How many hours of daylight does Kennewick have in April?

In April, the average day length in Kennewick is 13h and 36min.

When are sunrise and sunset in April?

In April, on the first day of the month, sunrise is at 6:34 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:04 pm PDT.

How many hours of sunshine does Kennewick have in April?

The average sunshine duration in April is 10.2h.

What is the UV index intensity in April?

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Kennewick, WA

Average temperature in April - Kennewick, 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
Kennewick, WA

Average pressure in April - Kennewick, 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
Kennewick, WA

Average wind speed in April - Kennewick, 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
Kennewick, WA

Average humidity in April - Kennewick, 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
Kennewick, WA

Average rainfall in April - Kennewick, 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
Kennewick, WA

Average rainfall days in April - Kennewick, 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
Kennewick, WA

Average snowfall in April - Kennewick, 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
Kennewick, WA

Average snowfall days in April - Kennewick, 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
Kennewick, WA

Average daylight in April / Average sunshine in April - Kennewick, 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 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
Kennewick, WA

Average sunshine days in April - Kennewick, 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
Kennewick, WA

Average UV index in April - Kennewick, 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
Kennewick, WA

Average cloud cover in April - Kennewick, 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
Kennewick, WA

Average visibility in April - Kennewick, 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).

Kennewick, Washington, USA

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