April weather forecast
Sunnyside, WA

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Weather in April

April in Sunnyside, Washington, is a moderate spring month, with an average temperature fluctuating between 60.4°F (15.8°C) and 41.4°F (5.2°C).

Temperature

The start of April signals an increase in the average high-temperature, moving from a fresh 50.9°F (10.5°C) in March to a mild 60.4°F (15.8°C). In April, the average low-temperature in Sunnyside records at a cold 41.4°F (5.2°C) during the nights.

Humidity

In April, the average relative humidity in Sunnyside is 55%.

Rainfall

In April, the rain falls for 10.4 days. Throughout April, 0.51" (13mm) of precipitation is accumulated. In Sunnyside, during the entire year, the rain falls for 104.5 days and collects up to 8.23" (209mm) of precipitation.

Snowfall

In Sunnyside, snow does not fall in April through August and October.

Daylight

In April, the average length of the day in Sunnyside is 13h and 36min.
On the first day of April, sunrise is at 6:37 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:08 pm PDT.

Sunshine

The average sunshine in April in Sunnyside is 9.9h.

UV index

In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In April, a regular UV index of 4 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What are April temperatures in Sunnyside?

In Sunnyside, 60.4°F (15.8°C) is the average high-temperature and 41.4°F (5.2°C) is the average low-temperature during April.

What is the average humidity in April in Sunnyside?

The average relative humidity in April in Sunnyside is 55%.

How much does it rain in Sunnyside in April?

In Sunnyside, Washington, in April, it is raining for 10.4 days, with typically 0.51" (13mm) of accumulated precipitation.

When it does not snow in Sunnyside?

In Sunnyside, snow does not fall in April through August and October.

Does it snow in Sunnyside in April?

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

How many hours of daylight does Sunnyside have in April?

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

What time are sunrise and sunset in April in Sunnyside?

In April, on the first day of the month, sunrise is at 6:37 am and sunset at 7:29 pm. On the last day of the month, in Sunnyside, Washington, sunrise is at 5:46 am and sunset at 8:08 pm PDT.

How long on average sun shines in April in Sunnyside?

The average sunshine duration in April in Sunnyside, Washington, is 9.9h.

What is the UV index reading in April in Sunnyside?

In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Sunnyside, WA

Average temperature in April - Sunnyside, WA
  • Average high temperature in April: 60.4°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (36.1°F).

  • Average low temperature in April: 41.4°F

The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (25.3°F).

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Average pressure in April
Sunnyside, WA

Average pressure in April - Sunnyside, WA
  • Average pressure in April: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

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Average wind speed in April
Sunnyside, WA

Average wind speed in April - Sunnyside, WA
  • Average wind speed in April: 8.3mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5mph).

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Average humidity in April
Sunnyside, WA

Average humidity in April - Sunnyside, WA
  • Average humidity in April: 55%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (38%).

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Average rainfall in April
Sunnyside, WA

Average rainfall in April - Sunnyside, WA
  • Average rainfall in April: 0.51"

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in April
Sunnyside, WA

Average rainfall days in April - Sunnyside, WA
  • Average rainfall days in April: 10.4 days

The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (4.1 days).

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Average snowfall in April
Sunnyside, WA

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

The month with the highest snowfall is December (2.24").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in April
Sunnyside, WA

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

The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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

Average daylight in April / Average sunshine in April - Sunnyside, 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: 9h and 5min

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: 4h and 54min).

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Average sunshine days in April
Sunnyside, WA

Average sunshine days in April - Sunnyside, WA
  • Average sunshine days in April: 17.2 days

The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is March (15.4 days).

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Average UV index in April
Sunnyside, WA

Average UV index in April - Sunnyside, WA
  • Average UV index in April: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Sunnyside, WA

Average cloud cover in April - Sunnyside, WA
  • Average cloud cover in April: 34

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 10).

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Average visibility in April
Sunnyside, WA

Average visibility in April - Sunnyside, WA
  • Average visibility in April: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).

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Sunnyside, Washington, USA

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