Sun Valley Airport (SUN) 15 Day Weather Forecast, Sun Valley United States
Current weather conditions and 15 day weather forecast for Sun Valley Airport in Sun Valley, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at SUN
| 20 December 2025 Sat 4.4 ° C ( 39.9°F )  Heavy snow |
Feels Like : 0.5 ° C / 32.9°F Humidity : % 75 Pressure : 1006 mb Wind Speed : 18.4 kmph / 11.4 miles from WNW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15-day weather forecast for Sun Valley Airport, Sun Valley, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 19 December 2025 Fri |  Moderate or heavy snow showers |
-6 ° C | 1.7 ° C | -1 ° C | % 94 | 28.8 km/h | 82% |
| 20 December 2025 Sat |  Sunny |
-13.7 ° C | -0.8 ° C | -7.5 ° C | % 77 | 13.3 km/h | 0% |
| 21 December 2025 Sun | Heavy snow |
-6.8 ° C | 1.8 ° C | -0.9 ° C | % 96 | 8.3 km/h | 80% |
| 22 December 2025 Mon |  Fog |
-6.6 ° C | 1.8 ° C | -0 ° C | % 96 | 11.2 km/h | 88% |
| 23 December 2025 Tue | Heavy snow |
-4.1 ° C | 1.7 ° C | -1.2 ° C | % 99 | 10.4 km/h | 71% |
| 24 December 2025 Wed | Heavy snow |
-3.1 ° C | 2.2 ° C | -1.5 ° C | % 89 | 11.9 km/h | 79% |
| 25 December 2025 Thu |  Mist |
-4.7 ° C | 1.7 ° C | -1.8 ° C | % 98 | 11.2 km/h | 88% |
| 26 December 2025 Fri |  Freezing fog |
-8.6 ° C | -0.9 ° C | -4.2 ° C | % 95 | 5.4 km/h | 85% |
| 27 December 2025 Sat |  Light freezing rain |
-13.7 ° C | -1.7 ° C | -8.3 ° C | % 82 | 14.4 km/h | 74% |
| 28 December 2025 Sun |  Partly Cloudy |
-12.7 ° C | 0.4 ° C | -7.9 ° C | % 72 | 14.4 km/h | 0% |
| 29 December 2025 Mon | Partly Cloudy |
-13.8 ° C | -1.8 ° C | -8.5 ° C | % 75 | 13.7 km/h | 0% |
| 30 December 2025 Tue | Sunny |
-14.9 ° C | -3.3 ° C | -10.6 ° C | % 74 | 13 km/h | 0% |
| 31 December 2025 Wed |  Moderate snow |
-13.9 ° C | -0.8 ° C | -8.9 ° C | % 91 | 14 km/h | 69% |
| 01 January 2026 Thu | Sunny |
-15.4 ° C | -2.3 ° C | -11 ° C | % 76 | 14 km/h | 0% |
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