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
| 13 December 2025 Sat -1.8 ° C ( 28.8°F )  Clear |
Feels Like : -4.7 ° C / 23.5°F Humidity : % 93 Pressure : 1029 mb Wind Speed : 7.6 kmph / 4.7 miles from E 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Sion Airport, Sion, Switzerland
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 13 December 2025 Sat | Sunny |
-4.3 ° C | 3.5 ° C | -2 ° C | % 80 | 7.9 km/h | 0% |
| 14 December 2025 Sun | Sunny |
-4.4 ° C | 3.5 ° C | -2 ° C | % 77 | 9.7 km/h | 0% |
| 15 December 2025 Mon |  Partly Cloudy |
-4.4 ° C | 2.4 ° C | -1.9 ° C | % 81 | 11.9 km/h | 0% |
| 16 December 2025 Tue | Partly Cloudy |
-2.8 ° C | 3.3 ° C | -0.7 ° C | % 88 | 13 km/h | 0% |
| 17 December 2025 Wed |  Light drizzle |
-1.9 ° C | 1.2 ° C | -0.6 ° C | % 95 | 7.6 km/h | 79% |
| 18 December 2025 Thu | Sunny |
-3.6 ° C | 2.4 ° C | -1.7 ° C | % 85 | 10.1 km/h | 0% |
| 19 December 2025 Fri | Sunny |
-3.4 ° C | 1.6 ° C | -1.8 ° C | % 84 | 10.4 km/h | 0% |
| 20 December 2025 Sat | Partly Cloudy |
-3.7 ° C | 1.1 ° C | -1.9 ° C | % 86 | 4.7 km/h | 0% |
| 21 December 2025 Sun | Sunny |
-4.8 ° C | 0.9 ° C | -3.1 ° C | % 80 | 5 km/h | 0% |
| 22 December 2025 Mon | Partly Cloudy |
-5.4 ° C | 0.5 ° C | -3.7 ° C | % 68 | 9 km/h | 0% |
| 23 December 2025 Tue | Sunny |
-5.5 ° C | 1.2 ° C | -3.5 ° C | % 66 | 8.3 km/h | 0% |
| 24 December 2025 Wed | Sunny |
-4.8 ° C | 2.1 ° C | -2.6 ° C | % 60 | 8.6 km/h | 0% |
| 25 December 2025 Thu | Sunny |
-4.7 ° C | 1.8 ° C | -2.8 ° C | % 58 | 8.3 km/h | 0% |
| 26 December 2025 Fri | Sunny |
-6.1 ° C | -0.6 ° C | -4.4 ° C | % 63 | 6.1 km/h | 0% |
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