Sun Valley
Idaho, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Sun Valley, ID

The iconic Sun Valley, Idaho, in a stunning hilly landscape on either side located within the famous White Cloud Wilderness, white clouds above
The iconic Sun Valley, Idaho, in a stunning hilly landscape on either side located within the famous White Cloud Wilderness, white clouds above
April is a cool spring month in Sun Valley, Idaho, with average temperature ranging between min 21.6°F (-5.8°C) and max 52.2°F (11.2°C).

Temperature

In Sun Valley, Idaho, the average high-temperature rises, from a cold 40.3°F (4.6°C) in March, to a cool 52.2°F (11.2°C). In April, in Sun Valley, the average low-temperature is 21.6°F (-5.8°C).

Rainfall

In Sun Valley, during 11 rainfall days, 1" (24.4mm) of precipitation is typically accumulated. Throughout the year, in Sun Valley, there are 122 rainfall days, and 17.2" (438.1mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sun Valley are January through May, September through December.

Daylight

In Sun Valley, the average length of the day in April is 13.5h.

Sunshine

The average sunshine in Sun Valley is 9h.

UV index

In Sun Valley, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
The daily maximum UV index of 6 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Sun Valley?

In April, the average high-temperature is 52.2°F (11.2°C), and the average low-temperature is 21.6°F (-5.8°C).

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

In Sun Valley, Idaho, in April, during 11 rainfall days, 1" (24.4mm) of precipitation is typically accumulated.

How much does it snow in Sun Valley in April?

In Sun Valley, in April, 4" (101.6mm) of snow is typically accumulated.

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

In Sun Valley, the average length of the day in April is 13.5h.

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

The average sunshine in April in Sun Valley, Idaho, is 9h.

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

The average daily maximum UV index in April is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in April - Sun Valley, ID
  • Average high temperature in April: 52.1°F

The warmest month (with the highest average high temperature) is July (82.5°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in April: 21.5°F

The month with the highest average low temperature is July (38.3°F).
The coldest month (with the lowest average low temperature) is January (0.3°F).

Average rainfall in April - Sun Valley, ID
  • Average rainfall in April: 1"

Wettest months (with the highest rainfall) are January and December (2.6").
The driest month (with the lowest rainfall) is July (0.7").

Average rainfall days in April - Sun Valley, ID
  • Average rainfall days in April: 11 days

Months with the highest number of rainy days are January, March and December (13 days).
Months with the lowest number of rainy days are July and October (7 days).

Average snowfall in April - Sun Valley, ID
  • Average snowfall in April: 4"

The month with the highest snowfall is January (36").
Months with the lowest snowfall are June, July and August (0").

Average daylight in April / Average sunshine in April - Sun Valley, ID
  • Average daylight in April: 13.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in April: 9h

The month with most sunshine is July (Average sunshine: 12h).
Months with least sunshine are January, November and December (Average sunshine: 4).

Average UV index in April - Sun Valley, ID
  • Average UV index in April: 6

The month with the highest UV index is July (UV index 10).
The month with the lowest UV index is December (UV index 1).