Sun Valley weather live forecast

Today's maximum temperature in Sun Valley is expected to be 30°F. Select a day from the live weather forecast for Sun Valley, Idaho, USA for more weather parameters.

Thursday
8th Jan
30

12

8

1
Friday
9th Jan
30

10

8

1
Saturday
10th Jan
34

16

7

2
Sunday
11th Jan
37

19

9

2
Monday
12th Jan
39

21

2

1

5-day weather forecast updated at 04:01 on Thursday 8th January 2026 GMT

More about Sun Valley

Sun Valley by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Idaho

Crystal Ski: up to £300pp off last minute ski breaks

Sale

Save up to £300 on last minute skiing holidays
Book late skiing holiday deals to Europe & North America
Filter deals by destination, board basis, rating, travel dates

Go to Crystal Ski deal >>

View all Crystal Ski offers

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 Thursday 8th January 2026

Expect clear skies with flurries of snow in Sun Valley, Idaho with a maximum temperature of 30°F, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0-2 cm of snow expected with 3% chance of some snow and a gentle breeze of 10 mph from the north-west.

30
°F maximum temperature
12
°F minimum temperature
clear skies with flurries of snow
8
hours of sunshine
1
UV index (Low)
3
% chance of some snow
<2
cm of snow expected
23
°F wind chill
10
mph wind from NW

Sun Valley weather for Friday 9th January 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 30°F, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 6 mph from the north.

30
°F maximum temperature
10
°F minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
cm of snow expected
25
°F wind chill
6
mph wind from N

Sun Valley weather for Saturday 10th January 2026

Expect scattered clouds in Sun Valley, Idaho with a maximum temperature of 34°F, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the north.

34
°F maximum temperature
16
°F minimum temperature
scattered clouds
7
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
28
°F wind chill
6
mph wind from N

Sun Valley weather for Sunday 11th January 2026

Expect clear skies in Sun Valley, Idaho with a maximum temperature of 37°F, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 mph from the north.

37
°F maximum temperature
19
°F minimum temperature
clear skies
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
34
°F wind chill
4
mph wind from N

Sun Valley weather for Monday 12th January 2026

Expect broken clouds in Sun Valley, Idaho with a maximum temperature of 39°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the north.