Unterwasser 7-Day Snow Forecast

Unterwasser Long-Range Snow Forecast Updated today

ECMWF IFS

GFS

PROSubscribe to Switch Weather Model

Updated 21 October 2026 13:46 BST

Long-Range Snow Forecast for Unterwasser

Long-range (14 to 45 days) from 21 October.

For Forecast detail, see below.

Unterwasser Snow Forecast Highlights

When will there be fresh snow in Unterwasser?

Unterwasser Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,581m)
Next Snow Expected	21 October
Next Snow Amount	2cm 1in
Next 48 Hours	3cm 1in
Next 7 Days	7cm 3in

Long-range Snow Outlook for Unterwasser

Snowfall

Snow Line

Max 18℃ 64°F
Min 1℃ 33°F

18cm 7in New Snow

Snow Line from 2,146m 7,041ft to 962m 3,156ft , with rain below.

Partner Offers

Unterwasser 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 Unterwasser from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Wed 21	up to 8cm up to 3in New Snow Light snow at altitude, light drizzle below. Snow Line from 2,146m 7,041ft to 1,454m 4,770ft , with rain below.	Max 11℃ 51°F Min 5℃ 41°F
Thu 22	up to 1cm up to 1in New Snow Light snow showers at altitude, light rain showers below. Snow Line from 1,469m 4,820ft to 1,315m 4,314ft , with rain below.	Max 11℃ 51°F Min 3℃ 36°F
Fri 23	Fair.	Max 13℃ 55°F Min 1℃ 34°F
Sat 24	up to 4cm up to 1in New Snow Light snow at altitude, light drizzle below. Snow Line from 1,577m 5,174ft to 962m 3,156ft , with rain below.	Max 6℃ 43°F Min 1℃ 33°F
Sun 25	up to 4cm up to 1in New Snow Light snow at altitude, light drizzle below. Snow Line from 2,069m 6,788ft to 1,177m 3,862ft , with rain below.	Max 10℃ 50°F Min 1℃ 33°F
Mon 26	Fog at altitude, cloudy below.	Max 14℃ 57°F Min 3℃ 38°F
Tue 27	Clear sky.	Max 18℃ 64°F Min 5℃ 40°F

This Snow Forecast for Unterwasser, 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 Unterwasser, 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.

Unterwasser Snow Forecast updated at 13:46 BST, next update expected 19:00 BST.

Ensemble forecast for Unterwasser, Switzerland at 900m

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.

Switzerland Accommodation (Apartments, Chalets, Hotels) Map

Snow Forecast near Unterwasser

Snow Forecasts for Ski Resorts near Unterwasser
Ski Area	48 Hr	7 Day
Schwägalp	18cm 7in	28cm 11in
Flims	14cm 5in	23cm 9in
Flumserberg	11cm 4in	19cm 7in
Wildhaus	13cm 5in	18cm 7in
Laterns	3cm 1in	6cm 2in
Dunserberg	-	2cm 1in

How reliable is the snow in Unterwasser?

Unterwasser typically enjoys reliable snow conditions, with an average snow depth of 50-100 cm throughout the season. For the latest updates on snowfall and conditions, check J2Ski for accurate and timely information.

Off-Piste Safety in Unterwasser

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