Sun Valley Weather Forecast 15 Days, Weather in Sun Valley Today
Current weather conditions and 15 day weather forecast for Sun Valley, Idaho, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Sun Valley
| 27 December 2025 Saturday -1.4 ° C / 29.5°F  Freezing fog |
Feels Like : -4.9 ° C / 23.1°F Humidity : % 99 Pressure : 1011 mb Wind Speed : 9 kmph / 5.6 miles from NNE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 54 |
15 day weather forecast for Sun Valley, ID, USA
Weather Forecast for next 15 Days for Sun Valley including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Sun Valley, Idaho state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 December 2025 Friday |  Thundery outbreaks in nearby |
-2.7 ° C (27.1°F) |
2.9 ° C (37.2°F) |
0.3 ° C (32.5°F) |
% 94 | 82% | 0.3 | Sunrise:08:09 AM Sunset: 05:07 PM |
Moonrise:11:55 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Partly Cloudy |
-10.5 ° C (13.1°F) |
-3.9 ° C (25°F) |
-5.9 ° C (21.4°F) |
% 75 | 0% | 0.3 | Sunrise:08:09 AM Sunset: 05:08 PM |
Moonrise:12:14 PM Moonset: 12:13 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Sunny |
-13.3 ° C (8.1°F) |
-4.6 ° C (23.7°F) |
-9.3 ° C (15.2°F) |
% 67 | 0% | 0.3 | Sunrise:08:10 AM Sunset: 05:09 PM |
Moonrise:12:36 PM Moonset: 01:26 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
-12 ° C (10.4°F) |
-2.5 ° C (27.5°F) |
-7.7 ° C (18.1°F) |
% 74 | 0% | 0.4 | Sunrise:08:10 AM Sunset: 05:09 PM |
Moonrise:01:01 PM Moonset: 02:42 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
-11.3 ° C (11.7°F) |
-1.5 ° C (29.3°F) |
-7 ° C (19.5°F) |
% 85 | 0% | 0.3 | Sunrise:08:10 AM Sunset: 05:10 PM |
Moonrise:01:33 PM Moonset: 04:02 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
-9.6 ° C (14.6°F) |
1.2 ° C (34.1°F) |
-6.6 ° C (20°F) |
% 84 | 0% | 0 | Sunrise:08:10 AM Sunset: 05:11 PM |
Moonrise:02:13 PM Moonset: 05:25 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Sunny |
-6.9 ° C (19.7°F) |
3.3 ° C (37.9°F) |
-2.8 ° C (26.9°F) |
% 81 | 0% | 2 | Sunrise:08:10 AM Sunset: 05:12 PM |
Moonrise:03:08 PM Moonset: 06:44 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Sunny |
-5.5 ° C (22°F) |
2.3 ° C (36.1°F) |
-2.6 ° C (27.3°F) |
% 81 | 0% | 2 | Sunrise:08:10 AM Sunset: 05:13 PM |
Moonrise:04:16 PM Moonset: 07:54 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 January 2026 Saturday |  Patchy moderate snow |
-5.9 ° C (21.4°F) |
2.3 ° C (36.2°F) |
-2.1 ° C (28.2°F) |
% 89 | 62% | 1 | Sunrise:08:10 AM Sunset: 05:14 PM |
Moonrise:05:34 PM Moonset: 08:50 AM Moon Phase ( Full Moon ) |
|
| 04 January 2026 Sunday |  Fog |
-5.5 ° C (22.2°F) |
1.7 ° C (35.1°F) |
-1.8 ° C (28.7°F) |
% 98 | 82% | 1 | Sunrise:08:10 AM Sunset: 05:15 PM |
Moonrise:06:55 PM Moonset: 09:33 AM Moon Phase ( Waning Gibbous ) |
|
| 05 January 2026 Monday | Sunny |
-16 ° C (3.2°F) |
-4.4 ° C (24.1°F) |
-8.2 ° C (17.2°F) |
% 79 | 0% | 2 | Sunrise:08:10 AM Sunset: 05:16 PM |
Moonrise:08:14 PM Moonset: 10:04 AM Moon Phase ( Waning Gibbous ) |
|
| 06 January 2026 Tuesday | Sunny |
-16.9 ° C (1.5°F) |
-7.4 ° C (18.8°F) |
-13.8 ° C (7.1°F) |
% 70 | 0% | 2 | Sunrise:08:10 AM Sunset: 05:17 PM |
Moonrise:09:28 PM Moonset: 10:29 AM Moon Phase ( Waning Gibbous ) |
|
| 07 January 2026 Wednesday | Sunny |
-17.9 ° C (-0.3°F) |
-8.5 ° C (16.7°F) |
-14.2 ° C (6.5°F) |
% 69 | 0% | 2 | Sunrise:08:10 AM Sunset: 05:18 PM |
Moonrise:10:38 PM Moonset: 10:50 AM Moon Phase ( Waning Gibbous ) |
|
| 08 January 2026 Thursday |  Cloudy |
-16.7 ° C (1.9°F) |
-6.3 ° C (20.6°F) |
-12.5 ° C (9.5°F) |
% 77 | 0% | 1 | Sunrise:08:10 AM Sunset: 05:19 PM |
Moonrise:11:45 PM Moonset: 11:09 AM Moon Phase ( Waning Gibbous ) |
|
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