Sion Airport (SIR) 15 Day Weather Forecast, Sion Switzerland
Current weather conditions and 15 day weather forecast for Sion Airport in Sion, Switzerland 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 SIR
| 05 December 2025 Fri 6 ° C ( 42.8°F )  Partly cloudy |
Feels Like : 5.8 ° C / 42.5°F Humidity : % 75 Pressure : 1012 mb Wind Speed : 3.6 kmph / 2.2 miles from WNW 
Visibility : 10 km Precipitation (rainfall) : 0.12 mm Cloud (%) : 75 |
15-day weather forecast for Sion Airport, Sion, Switzerland
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 05 December 2025 Fri |  Light drizzle |
-7.4 ° C | -1.2 ° C | -3.7 ° C | % 94 | 7.2 km/h | 83% |
| 06 December 2025 Sat | Partly Cloudy |
-7.3 ° C | 1.5 ° C | -2.1 ° C | % 89 | 7.2 km/h | 0% |
| 07 December 2025 Sun |  Light freezing rain |
-4.7 ° C | 0.8 ° C | -1 ° C | % 95 | 5.8 km/h | 84% |
| 08 December 2025 Mon |  Moderate rain |
0.4 ° C | 2.6 ° C | 1.6 ° C | % 100 | 4.3 km/h | 80% |
| 09 December 2025 Tue |  Sunny |
-1.8 ° C | 4.1 ° C | 0.6 ° C | % 87 | 9 km/h | 0% |
| 10 December 2025 Wed | Sunny |
-3.3 ° C | 3.3 ° C | -0.8 ° C | % 78 | 9.4 km/h | 0% |
| 11 December 2025 Thu | Sunny |
-4.2 ° C | 2.5 ° C | -1.8 ° C | % 80 | 9.7 km/h | 0% |
| 12 December 2025 Fri | Sunny |
-3.7 ° C | 2.2 ° C | -1.9 ° C | % 82 | 11.2 km/h | 0% |
| 13 December 2025 Sat |  Cloudy |
-3.1 ° C | 1.5 ° C | -0.8 ° C | % 90 | 10.1 km/h | 0% |
| 14 December 2025 Sun | Light freezing rain |
-2.7 ° C | 2.8 ° C | -0.5 ° C | % 90 | 11.9 km/h | 0% |
| 15 December 2025 Mon | Partly Cloudy |
-4 ° C | 0.8 ° C | -2.2 ° C | % 87 | 7.6 km/h | 0% |
| 16 December 2025 Tue | Light freezing rain |
-3.7 ° C | 2.5 ° C | 0.3 ° C | % 82 | 6.8 km/h | 67% |
| 17 December 2025 Wed |  Mist |
1.8 ° C | 5 ° C | 3.4 ° C | % 96 | 4.7 km/h | 0% |
| 18 December 2025 Thu | Sunny |
0.5 ° C | 5.7 ° C | 2.4 ° C | % 85 | 6.1 km/h | 0% |
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