Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 2°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Tuesday
30th Dec
2

-8

8

1
Wednesday
31st Dec
4

-4

6

2
Thursday
1st Jan
3

-1

1

1
Friday
2nd Jan
4

-1

1

1
Saturday
3rd Jan
4

-3

2

1

5-day weather forecast updated at 04:01 on Tuesday 30th December 2025 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 30th December 2025

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 2°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-west.

2
°C maximum temperature
-8
°C minimum temperature
clear skies
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
°C wind chill
7
kph wind from NW

Sun Valley weather for Wednesday 31st December 2025

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 4°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

4
°C maximum temperature
-4
°C minimum temperature
broken clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
7
kph wind from N

Sun Valley weather for Thursday 1st January 2026

Expect mostly cloudy with light snow in Sun Valley, Idaho with a maximum temperature of 3°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 41% chance of some snow and little or no wind of 5 kph from the north.

3
°C maximum temperature
-1
°C minimum temperature
mostly cloudy with light snow
1
hour of sunshine
1
UV index (Low)
41
% chance of some snow
<2
cm of snow expected
2
°C wind chill
5
kph wind from N

Sun Valley weather for Friday 2nd January 2026

Expect cloudy with sleet or snow in Sun Valley, Idaho with a maximum temperature of 4°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 54% chance of some sleet or snow and little or no wind of 6 kph from the south-east.

4
°C maximum temperature
-1
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
1
UV index (Low)
54
% chance of some sleet or snow
<10
mm of sleet/snow expected
2
°C wind chill
6
kph wind from SE

Sun Valley weather for Saturday 3rd January 2026

Expect cloudy with sleet or snow in Sun Valley, Idaho with a maximum temperature of 4°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 70% chance of some sleet or snow and a light breeze of 11 kph from the south-west.