Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 25°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Monday
25th May
25

8

7

UV8
Tuesday
26th May
20

9

1

UV7
Wednesday
27th May
21

6

4

UV7
Thursday
28th May
24

7

6

UV7
Friday
29th May
17

5

2

UV8

5-day weather forecast updated at 04:01 on Monday 25th 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 25th May 2026

Expect isolated thunderstorms in Sun Valley, Idaho with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 50% chance of some rain and a gentle breeze of 17 kph from the south.

25
°C maximum temperature
8
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
UV8
UV index (Very High)
50
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
17
kph wind from S

Sun Valley weather for Tuesday 26th May 2026

Expect mostly cloudy with light rain in Sun Valley, Idaho with a maximum temperature of 20°C, maximum UV of 7 (High) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a gentle breeze of 16 kph from the south.

20
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
UV7
UV index (High)
43
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
16
kph wind from S

Sun Valley weather for Wednesday 27th May 2026

Expect mostly cloudy with light rain in Sun Valley, Idaho with a maximum temperature of 21°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 16 kph from the south-east.

21
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
UV7
UV index (High)
62
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
16
kph wind from SE

Sun Valley weather for Thursday 28th May 2026

Expect mostly cloudy with light rain in Sun Valley, Idaho with a maximum temperature of 24°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 45% chance of some rain and a gentle breeze of 19 kph from the north.

24
°C maximum temperature
7
°C minimum temperature
mostly cloudy with light rain
6
hours of sunshine
UV7
UV index (High)
45
% chance of some rain
<2
mm of rainfall expected
24
°C wind chill
19
kph wind from N

Sun Valley weather for Friday 29th May 2026

Expect mostly cloudy with light rain in Sun Valley, Idaho with a maximum temperature of 17°C, maximum UV of 8 (Very High) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a light breeze of 12 kph from the south.