Siviez 7-Day Snow Forecast

Siviez Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 02 May 2026 20:42 BST

Long-Range Snow Forecast for Siviez

Long-range (14 to 45 days) from 2 May.

For Forecast detail, see below.

Siviez Snow Forecast Highlights

When will there be fresh snow in Siviez?

Siviez Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (2,215m)
Next Snow Expected	5 May
Next Snow Amount	1cm -
Next 48 Hours	- -
Next 7 Days	2cm 1in
Save on Ski Hire	Save up to 50%

Long-range Snow Outlook for Siviez

Snowfall

Snow Line

Max 16℃ 61°F
Min -2℃ 28°F

9cm 4in New Snow

Snow Line from 2,468m 8,097ft to resort level ( 1,730m 5,676ft ).

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Siviez Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Siviez from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sat 02	Fair.	Max 16℃ 61°F Min 1℃ 34°F
Sun 03	Cloudy.	Max 15℃ 59°F Min 3℃ 37°F
Mon 04	Cloudy.	Max 13℃ 54°F Min 2℃ 36°F
Tue 05	up to 3cm up to 1in New Snow Fair at altitude, rain showers below. Snow Line from 2,468m 8,097ft to resort level ( 1,730m 5,676ft ).	Max 12℃ 54°F Min 1℃ 34°F
Wed 06	up to 6cm up to 2in New Snow Light snow showers at altitude, light rain showers below. Snow Line from 2,330m 7,644ft to resort level ( 1,730m 5,676ft ).	Max 9℃ 48°F Min -1℃ 31°F
Thu 07	Clear spells at altitude, fair below.	Max 11℃ 51°F Min 1℃ 35°F
Fri 08	Clear sky at altitude, fair below.	Max 13℃ 56°F Min -2℃ 28°F

This Snow Forecast for Siviez, Switzerland gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Siviez, on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Siviez Snow Forecast updated at 20:42 BST, next update expected 02:00 BST.

Ensemble forecast for Siviez, Switzerland at 1,730m

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

Snow Forecast near Siviez

Snow Forecasts for Ski Resorts near Siviez
Ski Area	48 Hr	7 Day
Four Valleys	-	20cm 8in
Breuil-Cervinia	2cm 1in	19cm 8in
Grimentz	-	18cm 7in
Verbier	1cm 1in	18cm 7in
Nendaz	-	15cm 6in
Zermatt	2cm 1in	15cm 6in
Argentière	2cm 1in	15cm 6in
Evolène	-	13cm 5in

Snow Reliability

Siviez boasts reliable snow conditions with an average snow depth of 150 cm during peak season. The region typically experiences good snowfall, but it’s best to check the latest snow info on J2Ski for up-to-date conditions.

Off-Piste Safety in Siviez

Before skiing or snowboarding off-piste in Siviez, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.