April weather forecast and climate
Kelso, WA

Weather in April

April in Kelso, Washington, is a moderate spring month, with average temperature varying between 55.9°F (13.3°C) and 36.7°F (2.6°C).

Temperature

In April, the average high-temperature marginally rises, from a cool 50°F (10°C) in March, to a moderate 55.9°F (13.3°C). The average low-temperature, in Kelso, Washington, is 36.7°F (2.6°C).

Humidity

The average relative humidity in Kelso is 83%.

Rainfall

In Kelso, during 18.8 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Kelso, during the entire year, the rain falls for 175.5 days and collects up to 25.83" (656mm) of precipitation.

Snowfall

April through October are months without snowfall in Kelso, Washington.

Daylight

The average length of the day in April is 13.6h.

Sunshine

In Kelso, the average sunshine is 6.3h.

UV index

In Kelso, Washington, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 in April interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in April in Kelso?

In Kelso, Washington, the average relative humidity in April is 83%.

How much does it rain in Kelso in April?

In Kelso, Washington, during April, the rain falls for 18.8 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow in Kelso?

In Kelso, Washington, snow does not fall in April through October.

Does it snow in Kelso in April?

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

What is the average length of the day in April in Kelso?

The average length of the day in April in Kelso is 13.6h.

How many hours of sunshine does Kelso have in April?

In Kelso, the average sunshine in April is 6.3h.

How high is the UV index in April in Kelso?

In Kelso, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in April
Kelso, WA

Average temperature in April - Kelso, WA
  • Average high temperature in April: 55.9°F

The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).

  • Average low temperature in April: 36.7°F

The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).

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Average pressure in April
Kelso, WA

Average pressure in April - Kelso, WA
  • Average pressure in April: 30.06"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are August and September (30.01").

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Average wind speed in April
Kelso, WA

Average wind speed in April - Kelso, WA
  • Average wind speed in April: 4.4mph

The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).

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Average humidity in April
Kelso, WA

Average humidity in April - Kelso, WA
  • Average humidity in April: 83%

Months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in April
Kelso, WA

Average rainfall in April - Kelso, WA
  • Average rainfall in April: 2.28"

The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in April
Kelso, WA

Average rainfall days in April - Kelso, WA
  • Average rainfall days in April: 18.8 days

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).

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Average snowfall in April
Kelso, WA

Average snowfall in April - Kelso, WA
  • Average snowfall in April: 0"

The month with the highest snowfall is January (1.26").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in April
Kelso, WA

Average snowfall days in April - Kelso, WA
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is February (2.2 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Kelso, WA

Average daylight in April / Average sunshine in April - Kelso, WA
  • Average daylight in April: 13.6h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in April: 6.3h

The month with the most sunshine is August (Average sunshine: 10.4h).
Months with the least sunshine are January, February and December (Average sunshine: 3.5).

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Average sunshine days in April
Kelso, WA

Average sunshine days in April - Kelso, WA
  • Average sunshine days in April: 9.3 days

The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).

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Average UV index in April
Kelso, WA

Average UV index in April - Kelso, WA
  • Average UV index in April: 3

Months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in April
Kelso, WA

Average cloud cover in April - Kelso, WA
  • Average cloud cover in April: 62

Months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in April
Kelso, WA

Average visibility in April - Kelso, WA
  • Average visibility in April: 4mi

The month with the highest visibility is August (5mi).
Months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).

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