- Book early & save on 2026 river cruises with Avalon Waterways
- Filter deals by promotion, month, destination & more
- Travel between 1st Jan & 31st Dec 2026 (inclusive)
Sun Valley weather live forecast
Today's maximum temperature in Sun Valley is expected to be 27°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.
-
Friday
5th Sep -
Saturday
6th Sep -
Sunday
7th Sep -
Monday
8th Sep -
Tuesday
9th Sep
5-day weather forecast updated at 04:01 on Friday 5th September 2025 GMT
More about Sun Valley
Sun Valley by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Idaho
Expires at 23:59 on Thursday 31st Dec 2026 · View all Avalon Waterways offers
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 27°C, 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 10 kph from the north.
- °C maximum temperature
- °C minimum temperature
- sunshine and showers
- hours of sunshine
- UV index (High)
- % chance of some rain
- mm of rainfall expected
- low heat & humidity
- kph wind from N
Sun Valley weather for Saturday 6th September 2025
Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 24°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.
- °C maximum temperature
- °C minimum temperature
- scattered clouds
- hours of sunshine
- UV index (High)
- mm of rainfall expected
- no heat & humidity
- kph wind from N
Sun Valley weather for Sunday 7th September 2025
Expect isolated thunderstorms in Sun Valley, Idaho with a maximum temperature of 25°C, 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 11 kph from the north.
- °C maximum temperature
- °C minimum temperature
- isolated thunderstorms
- hours of sunshine
- UV index (Moderate)
- % chance of some rain
- mm of rainfall expected
- no heat & humidity
- kph wind from N
Sun Valley weather for Monday 8th September 2025
Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 25°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.
- °C maximum temperature
- °C minimum temperature
- scattered clouds
- hours of sunshine
- UV index (High)
- mm of rainfall expected
- °C wind chill
- kph wind from N
Sun Valley weather for Tuesday 9th September 2025
Expect isolated thunderstorms in Sun Valley, Idaho with a maximum temperature of 22°C, 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 14 kph from the north.
- °C maximum temperature
- °C minimum temperature
- isolated thunderstorms
- hours of sunshine
- UV index (High)
- % chance of some rain
- mm of rainfall expected
- no heat & humidity
- kph wind from N
- Save on return flights to worldwide destinations
- Book flights to Abu Dhabi, Jo'burg, Tokyo & more
- Plus more flights to the Americas, Middle East & Europe
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holiday destinations
- Beach holidays
- City breaks
- Family holidays
- Half term holidays
- Spring holidays
- Summer holidays
- Autumn holidays
- Winter sun holidays
- Honeymoons
- Coolcations
- Compare places
- Ski resorts
Save with latest deals & discounts
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- TUI
- Jet2holidays
- Neilson
- Marella Cruises
- Roamless eSIMs
- Confused.com
- Pierre & Vacances
- Caledonian Travel
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport