April weather forecast
Sun Valley, ID

The iconic Sun Valley, Idaho, in a stunning hilly landscape on either side located within the famous White Cloud Wilderness
The iconic Sun Valley, Idaho, in a stunning hilly landscape on either side located within the famous White Cloud Wilderness

Weather in April

April, like March, in Sun Valley, Idaho, is a wintry spring month, with an average temperature fluctuating between 39.9°F (4.4°C) and 23.4°F (-4.8°C).

Temperature

In Sun Valley, the average high-temperature in April slightly increases from 32.2°F (0.1°C) in March to a still cold 39.9°F (4.4°C). The average low-temperature, in Sun Valley, is 23.4°F (-4.8°C).

Humidity

In April, the average relative humidity is 75%.

Rainfall

In April, in Sun Valley, the rain falls for 11.9 days. Throughout April, 1.5" (38mm) of precipitation is accumulated. In Sun Valley, during the entire year, the rain falls for 107.7 days and collects up to 15.63" (397mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In Sun Valley, during April, snow falls for 10.6 days and regularly aggregates up to 5.83" (148mm) of snow. In Sun Valley, during the entire year, snow falls for 88.2 days and aggregates up to 69.45" (1764mm) of snow.

Daylight

In April, the average length of the day in Sun Valley, Idaho, is 13h and 28min.
On the first day of April, sunrise is at 7:18 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 8:38 pm MDT.

Sunshine

In April, the average sunshine is 9.6h.

UV index

In Sun Valley, the average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 2 in April interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in April in Sun Valley?

In April, the average high-temperature is 39.9°F (4.4°C), and the average low-temperature is 23.4°F (-4.8°C).

What is the average humidity in April in Sun Valley?

In April, the average relative humidity is 75%.

How much does it rain in Sun Valley in April?

In April, in Sun Valley, the rain falls for 11.9 days. Throughout April, 1.5" (38mm) of precipitation is accumulated.

How much does it snow in Sun Valley in April?

In April, it is snowing for 10.6 days. Throughout April, 5.83" (148mm) of snow is accumulated.

What is the average length of the day in April in Sun Valley?

In April, the average day length in Sun Valley, Idaho, is 13h and 28min.

What time are sunrise and sunset in April in Sun Valley?

On the first day of April in Sun Valley, sunrise is at 7:18 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 8:38 pm MDT.

How many hours of sunshine does Sun Valley have in April?

The average sunshine duration in April in Sun Valley is 9.6h.

How high is the UV index in April in Sun Valley?

In April, the average daily maximum UV index in Sun Valley is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Sun Valley, ID

Average temperature in April - Sun Valley, ID
  • Average high temperature in April: 39.9°F

The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).

  • Average low temperature in April: 23.4°F

The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).

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Average pressure in April
Sun Valley, ID

Average pressure in April - Sun Valley, ID
  • Average pressure in April: 29.97"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in April
Sun Valley, ID

Average wind speed in April - Sun Valley, ID
  • Average wind speed in April: 5.9mph

The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).

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Average humidity in April
Sun Valley, ID

Average humidity in April - Sun Valley, ID
  • Average humidity in April: 75%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in April
Sun Valley, ID

Average rainfall in April - Sun Valley, ID
  • Average rainfall in April: 1.5"

The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in April
Sun Valley, ID

Average rainfall days in April - Sun Valley, ID
  • Average rainfall days in April: 11.9 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).

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Average snowfall in April
Sun Valley, ID

Average snowfall in April - Sun Valley, ID
  • Average snowfall in April: 5.83"

The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").

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Average snowfall days in April
Sun Valley, ID

Average snowfall days in April - Sun Valley, ID
  • Average snowfall days in April: 10.6 days

The month with the highest number of snowfall days is March (16 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in April /
Average sunshine in April
Sun Valley, ID

Average daylight in April / Average sunshine in April - Sun Valley, ID
  • Average daylight in April: 13h and 28min

The month with the longest days is June (Average daylight: 15h and 23min).
The month with the shortest days is December (Average daylight: 8h and 59min).

  • Average sunshine in April: 9h and 36min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

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Average sunshine days in April
Sun Valley, ID

Average sunshine days in April - Sun Valley, ID
  • Average sunshine days in April: 11.1 days

The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).

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Average UV index in April
Sun Valley, ID

Average UV index in April - Sun Valley, ID
  • Average UV index in April: 2

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

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Average cloud cover in April
Sun Valley, ID

Average cloud cover in April - Sun Valley, ID
  • Average cloud cover in April: 33

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 10).

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Average visibility in April
Sun Valley, ID

Average visibility in April - Sun Valley, ID
  • Average visibility in April: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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