Alyeska 7-Day Snow Forecast

Alyeska Long-Range Snow Forecast Updated today

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Updated 13 September 2026 03:48 AEST

Long-Range Snow Forecast for Alyeska

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

For Forecast detail, see below.

Alyeska Snow Forecast Highlights

When will there be fresh snow in Alyeska?

Alyeska Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (460m)
Next Snow?
There is no snow currently in the forecast for Alyeska.

Long-range Snow Outlook for Alyeska

Snowfall

Snow Line

Max 18℃
Min 9℃

Snow unlikely

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Alyeska 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 Alyeska from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Sat 12	Cloudy.	Max 18℃ Min 11℃
Sun 13	Cloudy.	Max 18℃ Min 11℃
Mon 14	Cloudy.	Max 16℃ Min 11℃
Tue 15	Heavy drizzle.	Max 11℃ Min 10℃
Wed 16	Cloudy.	Max 15℃ Min 10℃
Thu 17	Cloudy.	Max 14℃ Min 9℃
Fri 18	Light drizzle.	Max 13℃ Min 10℃

No significant snowfall is forecast for this period.

This Snow Forecast for Alyeska, United States 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 Alyeska, 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.

Alyeska Snow Forecast updated at 03:48 AEST, next update expected 09:00 AEST.

Ensemble forecast for Alyeska, USA at 80m

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 Reliability

Alyeska typically sees an impressive average snowfall of 650 inches annually, with snow depths varying throughout the season. For the latest snow conditions and detailed reports, check J2Ski for up-to-date information.

Off-Piste Safety in Alyeska

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