Keystone 7-Day Snow Forecast

Keystone Long-Range Snow Forecast Updated today

ECMWF IFS

GEM

GFS

PROSubscribe to Switch Weather Model

Updated 09 November 2026 05:13 IST

Long-Range Snow Forecast for Keystone

Long-range (14 to 45 days) from 9 November.

For Forecast detail, see below.

Keystone Snow Forecast Highlights

When will there be fresh snow in Keystone?

Keystone Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (3,280m)
Next Snow Expected	21 November
Next Snow Amount	1cm
Next 48 Hours	-
Next 7 Days	-

Long-range Snow Outlook for Keystone

Snowfall

Snow Line

Max 14℃
Min -3℃

Snow unlikely

Partner Offers

Keystone 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 Keystone from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Mon 09	Clear sky.	Max 14℃ Min 0℃
Tue 10	Cloudy.	Max 9℃ Min -2℃
Wed 11	Clear sky.	Max 8℃ Min -3℃
Thu 12	Clear sky.	Max 10℃ Min -2℃
Fri 13	Clear sky.	Max 12℃ Min 0℃
Sat 14	Clear sky.	Max 12℃ Min 0℃
Sun 15	Cloudy.	Max 9℃ Min 0℃

This Snow Forecast for Keystone, 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 Keystone, 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.

Keystone Snow Forecast updated at 05:13 IST, next update expected 07:30 IST.

Ensemble forecast for Keystone, USA at 2,840m

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

How reliable is the snow in Keystone?

Keystone typically enjoys a robust snowpack, with average snow depths reaching up to 80 inches during peak season. Regular snowfall ensures good conditions, but always check J2Ski for the latest snow updates.

Off-Piste Safety in Keystone

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