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Sion weather 15 days
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–Sion weather 15 days, from 14 Nov to 29 Nov: 0 day(s) of clear skies expected, highs from 3 to 12 °C and 103.0 mm of precipitation in total. Day-by-day table (Open-Meteo model).
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today |  overcast | 3 °C | 12 °C | 0.0 mm | 7 km/h |
| Tomorrow |  light rain | 6 °C | 11 °C | 5.8 mm | 8 km/h |
| Mon 16 Nov | showers | 6 °C | 9 °C | 10.6 mm | 8 km/h |
| Tue 17 Nov | light rain | 7 °C | 10 °C | 12.0 mm | 9 km/h |
| Wed 18 Nov | rain | 5 °C | 9 °C | 21.5 mm | 11 km/h |
| Thu 19 Nov | showers | 6 °C | 11 °C | 12.2 mm | 7 km/h |
| Fri 20 Nov |  snow showers | 1 °C | 7 °C | 8.9 mm | 11 km/h |
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 21 Nov | overcast | −1 °C | 9 °C | 0.0 mm | 8 km/h |
| Sun 22 Nov | snow showers | −1 °C | 8 °C | 3.2 mm | 3 km/h |
| Mon 23 Nov | snow | −1 °C | 8 °C | 1.0 mm | 3 km/h |
| Tue 24 Nov | overcast | −3 °C | 7 °C | 0.0 mm | 4 km/h |
| Wed 25 Nov | snow showers | 2 °C | 7 °C | 1.8 mm | 2 km/h |
| Thu 26 Nov | overcast | −2 °C | 6 °C | 0.0 mm | 4 km/h |
| Fri 27 Nov | overcast | −5 °C | 8 °C | 0.0 mm | 3 km/h |
| Sat 28 Nov | snow showers | −5 °C | 3 °C | 9.7 mm | 4 km/h |
| Sun 29 Nov | light rain | −1 °C | 6 °C | 16.2 mm | 11 km/h |
And at 20, 25 or 30 days? No model seriously forecasts that far. Climatology takes over: the November norm is 5.1 °C in Sion, the December norm 1.1 °C (MeteoSwiss 1991–2020, monthly means measured nearby).
Frequently asked questions
Which will be the warmest day of the next 15 days in Sion?
saturday 14 Nov, with a high of 12 °C. The coolest will be saturday 28 Nov, with 3 °C.
How many rainy days are expected in Sion over 15 days?
11 days with at least 1 mm, for 103.0 mm in total. The wettest: wednesday 18 Nov (21.5 mm).
What is the outlook for next week in Sion?
Cooler than this one: an average high of 7.6 °C against 9.9 °C.
Will the fortnight be warmer than normal in Sion?
Within the norm: an expected mean of 4.6 °C, against 5.1 °C for the MeteoSwiss 1991–2020 norm for November.
Will it snow in Sion in the next 15 days?
Yes: 4 days with snow, 10 cm in total, mostly saturday 28 Nov.
Are these 15-day forecasts reliable?
Reliability decreases with the horizon: excellent at 3 days, good up to 7, indicative beyond 10. Each passing day sharpens the rest.
Can the weather be forecast a month ahead?
No, not day by day. That is why this page completes the 16 forecast days with the MeteoSwiss monthly norms for Sion: the most honest estimate beyond two weeks.
meteo-ch.ch · Open-Meteo data, MeteoSwiss norms 1991–2020