Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 13°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Monday
18th May
13

-4

13

8
Tuesday
19th May
15

-2

8

6
Wednesday
20th May
18

0

2

6
Thursday
21st May
19

2

9

6
Friday
22nd May
20

2

4

7

5-day weather forecast updated at 04:01 on Monday 18th 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 Monday 18th May 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 13°C, maximum UV of 8 (Very High) and 13 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
-4
°C minimum temperature
clear skies
13
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 scattered clouds in Sun Valley, Idaho with a maximum temperature of 15°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

15
°C maximum temperature
-2
°C minimum temperature
scattered clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from SW

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 6 (High) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

18
°C maximum temperature
0
°C minimum temperature
broken clouds
2
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
18
°C wind chill
13
kph wind from W

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 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north.

19
°C maximum temperature
2
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from N

Sun Valley weather for Friday 22nd May 2026

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 20°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.