Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 81°F. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

5-day weather forecast updated at 04:01 on Friday 5th September 2025 GMT

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The 5-day weather forecast for Idaho (Sun Valley) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Sun Valley weather forecast by day

Below are the detailed weather forecasts for Sun Valley for the next 5 days.

Sun Valley weather for Friday 5th September 2025

Expect sunshine and showers in Sun Valley, Idaho with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a light breeze of 6 mph from the north.

  • 81°F maximum temperature81
    °F maximum temperature
  • 48°F minimum temperature48
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 20% chance of some rain20
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 6 mph from the North6
    mph wind from N

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Sun Valley weather for Saturday 6th September 2025

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 75°F, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north.

  • 75°F maximum temperature75
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 7 mph from the North7
    mph wind from N

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Sun Valley weather for Sunday 7th September 2025

Expect isolated thunderstorms in Sun Valley, Idaho with a maximum temperature of 77°F, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 28% chance of some rain and a light breeze of 7 mph from the north.

  • 77°F maximum temperature77
    °F maximum temperature
  • 46°F minimum temperature46
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 28% chance of some rain28
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 7 mph from the North7
    mph wind from N

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Sun Valley weather for Monday 8th September 2025

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 77°F, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north.

  • 77°F maximum temperature77
    °F maximum temperature
  • 45°F minimum temperature45
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 77°F wind chill77
    °F wind chill
  • Gentle breeze of 9 mph from the North9
    mph wind from N

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Sun Valley weather for Tuesday 9th September 2025

Expect isolated thunderstorms in Sun Valley, Idaho with a maximum temperature of 72°F, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 19% chance of some rain and a gentle breeze of 9 mph from the north.

  • 72°F maximum temperature72
    °F maximum temperature
  • 48°F minimum temperature48
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 19% chance of some rain19
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 9 mph from the North9
    mph wind from N

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