Sierra Summit 7-Day Snow Forecast

Sierra Summit Long-Range Snow Forecast Updated today

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Updated 31 August 2026 16:48 AEST

Long-Range Snow Forecast for Sierra Summit

Long-range (14 to 45 days) from 31 August.

For Forecast detail, see below.

Sierra Summit Snow Forecast Highlights

When will there be fresh snow in Sierra Summit?

Sierra Summit Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (2,398m)
Next Snow?
There is no snow currently in the forecast for Sierra Summit.

Long-range Snow Outlook for Sierra Summit

Snowfall

Snow Line

Max 27℃
Min 12℃

Snow unlikely

Sierra Summit 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 Sierra Summit from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Mon 31	Cloudy.	Max 22℃ Min 12℃
Tue 01	Clear sky.	Max 26℃ Min 14℃
Wed 02	Clear sky.	Max 27℃ Min 21℃
Thu 03	Clear sky.	Max 27℃ Min 20℃
Fri 04	Rain showers.	Max 24℃ Min 16℃
Sat 05	Cloudy.	Max 20℃ Min 14℃
Sun 06	Cloudy.	Max 25℃ Min 17℃

No significant snowfall is forecast for this period.

This Snow Forecast for Sierra Summit, 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 Sierra Summit, 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.

Sierra Summit Snow Forecast updated at 16:48 AEST, next update expected 22:00 AEST.

Ensemble forecast for Sierra Summit, USA at 2,142m

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

Sierra Summit typically enjoys reliable snow conditions, with an average snow depth of 5 to 15 feet during peak season. Regular snowfall and grooming ensure excellent skiing; check J2Ski for the latest updates on conditions.

Off-Piste Safety in Sierra Summit

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