Arc 1800 7-Day Snow Forecast

Arc 1800 Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 02 May 2026 06:40 PDT

Long-Range Snow Forecast for Arc 1800

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

For Forecast detail, see below.

Arc 1800 Snow Forecast Highlights

When will there be fresh snow in Arc 1800?

Arc 1800 Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (8,251ft)
Next Snow Expected	5 May
Next Snow Amount	2in
Next 48 Hours	-
Next 7 Days	4in
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Long-range Snow Outlook for Arc 1800

Snowfall

Snow Line

Max 53°F
Min 26°F

5in New Snow

Snow Line from 8,934ft to resort level (5,906ft).

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Arc 1800 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 Arc 1800 from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sat 02	Cloudy.	Max 53°F Min 26°F
Sun 03	Cloudy.	Max 49°F Min 36°F
Mon 04	up to 1in New Snow Cloudy. Snow Line from 8,127ft to 6,864ft, with rain below.	Max 43°F Min 36°F
Tue 05	1in to 2in New Snow Snow at altitude, rain showers below. Snow Line from 8,934ft to resort level (5,906ft).	Max 46°F Min 33°F
Wed 06	up to 2in New Snow Heavy snow showers at altitude, heavy rain showers below. Snow Line from 7,572ft to resort level (5,906ft).	Max 41°F Min 32°F
Thu 07	New Snow Fair. Snow Line from 6,007ft to resort level (5,906ft).	Max 46°F Min 34°F
Fri 08	Cloudy.	Max 47°F Min 33°F

This Snow Forecast for Arc 1800, France 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 Arc 1800, on any given trail 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.

Arc 1800 Snow Forecast updated at 06:40 PDT, next update expected 12:00 PDT.

Long-range ensemble forecasts for Arc 1800 will be available shortly.

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 Arc 1800

Snow Forecasts for Ski Resorts near Arc 1800
Ski Area	48 Hr	7 Day
Les Menuires	2in	14in
Méribel	1in	13in
Val Thorens	2in	14in
Courchevel	1in	12in
Les Arcs	1in	11in
Tignes	1in	6in
Arc 1950	1in	6in
Arc 2000	1in	6in

Snow Reliability

Arc 1800 enjoys reliable snow conditions, with an average snow depth of 150 cm during peak season and consistent snowfall throughout the winter. For the latest snow information, be sure to check J2Ski for up-to-date conditions.

Off-Piste Safety in Arc 1800

Before skiing or snowboarding off-piste in Arc 1800, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.