Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 10°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Sunday
17th May
10

-4

3

6
Monday
18th May
13

-3

10

8
Tuesday
19th May
15

-2

4

6
Wednesday
20th May
18

-2

4

7
Thursday
21st May
19

0

13

7

5-day weather forecast updated at 04:00 on Sunday 17th May 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 Sunday 17th May 2026

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 10°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north.

10
°C maximum temperature
-4
°C minimum temperature
broken clouds
3
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from N

Sun Valley weather for Monday 18th May 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 13°C, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the north.

13
°C maximum temperature
-3
°C minimum temperature
scattered clouds
10
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
24
kph wind from N

Sun Valley weather for Tuesday 19th May 2026

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 15°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

15
°C maximum temperature
-2
°C minimum temperature
broken clouds
4
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
15
°C wind chill
13
kph wind from W

Sun Valley weather for Wednesday 20th May 2026

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 18°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.

18
°C maximum temperature
-2
°C minimum temperature
broken clouds
4
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
18
°C wind chill
16
kph wind from N

Sun Valley weather for Thursday 21st May 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 19°C, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north.