Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 21°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Tuesday
8th Sep
21

3

13

7
Wednesday
9th Sep
24

5

13

7
Thursday
10th Sep
26

5

8

7
Friday
11th Sep
23

7

11

7
Saturday
12th Sep
22

8

9

7

5-day weather forecast updated at 04:01 on Tuesday 8th September 2026 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 Tuesday 8th September 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 21°C, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north.

21
°C maximum temperature
3
°C minimum temperature
clear skies
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from N

Sun Valley weather for Wednesday 9th September 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 24°C, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-west.

24
°C maximum temperature
5
°C minimum temperature
clear skies
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from SW

Sun Valley weather for Thursday 10th September 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 26°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

26
°C maximum temperature
5
°C minimum temperature
scattered clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
26
°C wind chill
15
kph wind from SW

Sun Valley weather for Friday 11th September 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 23°C, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

23
°C maximum temperature
7
°C minimum temperature
scattered clouds
11
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from SW

Sun Valley weather for Saturday 12th September 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 22°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.