April weather forecast
Sun Valley, ID

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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 marks a noticeable weather change in Sun Valley as the city begins to shake off winter's intensity. The snowfall significantly decreases to 5.83" (148mm) compared to March's 12.56" (319mm), and temperatures start climbing with the daily highs reaching a comforting 39.9°F (4.4°C). With snow melting away, Sun Valley sees a sprouting of spring landscapes, making April an ideal period for experiencing the city's natural beauty as it awakens from winter's slumber. Light showers intersperse with increasingly sunny days, amplifying the delightful spring atmosphere. Thus, April is a picture-perfect season for taking leisurely strolls around the rejuvenating city.

Temperature

April showcases a minor temperature ascent, adjusting from March's wintry 32.2°F (0.1°C) to a still icy 39.9°F (4.4°C). In April, the average low-temperature is a subzero cold 23.4°F (-4.8°C).

Humidity

In Sun Valley, the average relative humidity in April is 75%.

Rainfall

In Sun Valley, in April, it is raining for 11.9 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 107.7 rainfall days, and 15.63" (397mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sun Valley are January through June, September through December. In Sun Valley, Idaho, in April, during 10.6 snowfall days, 5.83" (148mm) of snow is typically accumulated. Throughout the year, in Sun Valley, Idaho, there are 88.2 snowfall days, and 69.45" (1764mm) of snow is accumulated.

Daylight

In Sun Valley, the average length of the day in April is 13h and 28min.
On the first day of April in Sun Valley, sunrise is at 7:17 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:39 pm MDT.

Sunshine

In Sun Valley, the average sunshine in April is 9.6h.

UV index

In Sun Valley, the average daily maximum UV index in April is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In April, a daily maximum UV index of 2 leads to the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

Is April cold in Sun Valley?

During April, Sun Valley experiences an average high-temperature of 39.9°F (4.4°C) and a low-temperature of 23.4°F (-4.8°C).

What is the average humidity in April in Sun Valley?

In Sun Valley, the average relative humidity in April is 75%.

How much does it rain in Sun Valley in April?

In Sun Valley, in April, during 11.9 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

How many days does it snow in April in Sun Valley?

In Sun Valley, in April, during 10.6 snowfall days, 5.83" (148mm) of snow is typically accumulated.

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

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

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

In April, on the first day of the month, sunrise is at 7:17 am and sunset at 8:04 pm. On the last day of the month, in Sun Valley, sunrise is at 6:29 am and sunset at 8:39 pm MDT.

How long on average sun shines in April in Sun Valley?

In April, the average sunshine duration in Sun Valley is 9.6h.

What is the UV index reading in April in Sun Valley?

In April, the average daily maximum UV index in Sun Valley is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
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 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in April: 9h and 4min

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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Sun Valley, Idaho, USA

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