Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 28°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Tuesday
4th Aug
28

5

14

9
Wednesday
5th Aug
30

7

14

9
Thursday
6th Aug
33

10

13

8
Friday
7th Aug
34

11

13

8
Saturday
8th Aug
33

13

8

8

5-day weather forecast updated at 04:01 on Wednesday 5th August 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 4th August 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

28
°C maximum temperature
5
°C minimum temperature
clear skies
14
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
15
kph wind from N

Sun Valley weather for Wednesday 5th August 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 30°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

30
°C maximum temperature
7
°C minimum temperature
clear skies
14
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
14
kph wind from N

Sun Valley weather for Thursday 6th August 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 33°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

33
°C maximum temperature
10
°C minimum temperature
clear skies
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from W

Sun Valley weather for Friday 7th August 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 34°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

34
°C maximum temperature
11
°C minimum temperature
clear skies
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
17
kph wind from W

Sun Valley weather for Saturday 8th August 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 33°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.