Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 19°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Monday
28th Sep
19

6

6

5
Tuesday
29th Sep
21

3

12

6
Wednesday
30th Sep
22

4

10

6
Thursday
1st Oct
21

4

11

6
Friday
2nd Oct
22

4

10

5

5-day weather forecast updated at 04:01 on Monday 28th 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 Monday 28th September 2026

Expect sunshine and showers in Sun Valley, Idaho with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and little or no wind of 5 kph from the north.

19
°C maximum temperature
6
°C minimum temperature
sunshine and showers
6
hours of sunshine
5
UV index (Moderate)
21
% chance of some rain
<2
mm of rainfall expected
19
°C wind chill
5
kph wind from N

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 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.

22
°C maximum temperature
4
°C minimum temperature
clear skies
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
22
°C wind chill
6
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 little or no wind of 5 kph from the north.

21
°C maximum temperature
4
°C minimum temperature
clear skies
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
5
kph wind from N

Sun Valley weather for Friday 2nd October 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north.