Alta 7-Day Snow Forecast

Alta Long-Range Snow Forecast Updated today

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Updated 09 September 2026 05:40 NZST

Long-Range Snow Forecast for Alta

Long-range (14 to 45 days) from 8 September.

For Forecast detail, see below.

Alta Snow Forecast Highlights

When will there be fresh snow in Alta?

Alta Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (2,987m)
Next Snow?
There is no snow currently in the forecast for Alta.

Long-range Snow Outlook for Alta

Snowfall

Snow Line

Max 23℃
Min 4℃

Snow unlikely

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Alta 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 Alta from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Tue 08	Clear sky.	Max 18℃ Min 7℃
Wed 09	Cloudy.	Max 19℃ Min 11℃
Thu 10	Clear sky.	Max 21℃ Min 8℃
Fri 11	Light drizzle.	Max 20℃ Min 11℃
Sat 12	Clear sky.	Max 23℃ Min 11℃
Sun 13	Heavy drizzle.	Max 15℃ Min 6℃
Mon 14	Clear sky.	Max 17℃ Min 4℃

No significant snowfall is forecast for this period.

This Snow Forecast for Alta, 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 Alta, 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.

Alta Snow Forecast updated at 05:40 NZST, next update expected 11:00 NZST.

Ensemble forecast for Alta, USA at 2,600m

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.

United States Accommodation (Apartments, Chalets, Hotels) Map

Snow Reliability

Alta is known for its impressive snow reliability, with typical snow depths ranging from 100 to 300 inches. For the latest snow conditions, visit J2Ski for up-to-date information.

Off-Piste Safety in Alta

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