Arc 1600 7-Day Snow Forecast

Arc 1600 Long-Range Snow Forecast Updated today

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Updated 11 June 2026 15:45 PDT

Long-Range Snow Forecast for Arc 1600

Long-range (14 to 45 days) from 12 June.

For Forecast detail, see below.

Arc 1600 Snow Forecast Highlights

When will there be fresh snow in Arc 1600?

Arc 1600 Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (7,923ft)
Next Snow?
There is no snow currently in the forecast for Arc 1600.
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Long-range Snow Outlook for Arc 1600

Snowfall

Snow Line

Max 73°F
Min 35°F

Snow unlikely

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Arc 1600 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 1600 from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Fri 12	Fair.	Max 62°F Min 35°F
Sat 13	Clear sky.	Max 68°F Min 39°F
Sun 14	Cloudy.	Max 67°F Min 42°F
Mon 15	Clear sky.	Max 65°F Min 44°F
Tue 16	Clear sky.	Max 69°F Min 44°F
Wed 17	Clear sky.	Max 72°F Min 46°F
Thu 18	Clear sky.	Max 73°F Min 52°F

No significant snowfall is forecast for this period.

This Snow Forecast for Arc 1600, 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 1600, 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 1600 Snow Forecast updated at 15:45 PDT, next update expected 21:00 PDT.

Long-range ensemble forecasts for Arc 1600 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 Reliability

Arc 1600 benefits from a good snow reliability with a typical depth of around 150 cm during peak season. For the latest snow conditions and updates, check J2Ski for accurate and timely information.

Off-Piste Safety in Arc 1600

Before skiing or snowboarding off-piste in Arc 1600, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.