Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 5°C. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Friday
19th Dec
5

-7

1

0
Saturday
20th Dec
0

-12

5

1
Sunday
21st Dec
3

-6

0

1
Monday
22nd Dec
5

-2

0

1
Tuesday
23rd Dec
6

-1

1

1

5-day weather forecast updated at 04:01 on Friday 19th 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 Friday 19th December 2025

Expect cloudy with sleet or snow in Sun Valley, Idaho with a maximum temperature of 5°C and 1 hour of bright sunshine. There are 10-20 mm of sleet/snow expected with 100% chance of some sleet or snow and a moderate breeze of 23 kph from the south.

5
°C maximum temperature
-7
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
0
UV index (None)
100
% chance of some sleet or snow
<20
mm of sleet/snow expected
0
°C wind chill
23
kph wind from S

Sun Valley weather for Saturday 20th December 2025

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 0°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 11 kph from the north-west.

0
°C maximum temperature
-12
°C minimum temperature
broken clouds
5
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-4
°C wind chill
11
kph wind from NW

Sun Valley weather for Sunday 21st December 2025

Expect cloudy with sleet or snow in Sun Valley, Idaho with a maximum temperature of 3°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 99% chance of some sleet or snow and a light breeze of 9 kph from the south.

3
°C maximum temperature
-6
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
1
UV index (Low)
99
% chance of some sleet or snow
<20
mm of sleet/snow expected
1
°C wind chill
9
kph wind from S

Sun Valley weather for Monday 22nd December 2025

Expect cloudy with sleet or snow in Sun Valley, Idaho with a maximum temperature of 5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of sleet/snow expected with 82% chance of some sleet or snow and a light breeze of 12 kph from the south-west.

5
°C maximum temperature
-2
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
1
UV index (Low)
82
% chance of some sleet or snow
<30
mm of sleet/snow expected
2
°C wind chill
12
kph wind from SW

Sun Valley weather for Tuesday 23rd December 2025

Expect mostly cloudy with light snow in Sun Valley, Idaho with a maximum temperature of 6°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 71% chance of some snow and a light breeze of 9 kph from the south-east.