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
29th Sep
21

3

12

6
Wednesday
30th Sep
22

4

11

6
Thursday
1st Oct
21

4

11

6
Friday
2nd Oct
23

5

7

5
Saturday
3rd Oct
22

5

12

6

5-day weather forecast updated at 04:00 on Tuesday 29th 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 29th September 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 21°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.

21
°C maximum temperature
3
°C minimum temperature
clear skies
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
6
kph wind from N

Sun Valley weather for Wednesday 30th September 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 22°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north.

22
°C maximum temperature
4
°C minimum temperature
clear skies
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
5
kph wind from N

Sun Valley weather for Thursday 1st October 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 21°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.

21
°C maximum temperature
4
°C minimum temperature
clear skies
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
7
kph wind from SW

Sun Valley weather for Friday 2nd October 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north.

23
°C maximum temperature
5
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from N

Sun Valley weather for Saturday 3rd October 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 22°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north.