Keystone 7-Day Snow Forecast

Keystone Long-Range Snow Forecast Updated today

ECMWF IFS

GEM

GFS

PROSubscribe to Switch Weather Model

Updated 01 November 2026 00:42 NZDT

Long-Range Snow Forecast for Keystone

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

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	2 November
Next Snow Amount	6cm
Next 48 Hours	7cm
Next 7 Days	9cm

Long-range Snow Outlook for Keystone

Snowfall

Snow Line

Max 10℃
Min -6℃

11cm New Snow

Snow Line from 3,369m to resort level (2,840m).

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
Sat 31	up to 1cm New Snow Cloudy. Snow falling to 2,979m, with rain below.	Max 9℃ Min 2℃
Sun 01	up to 1cm New Snow Cloudy. Snow Line from 3,369m to 3,299m, with rain below.	Max 10℃ Min 1℃
Mon 02	1cm to 6cm New Snow Light snow showers at altitude, light rain below. Snow Line from 3,229m to resort level (2,840m).	Max 5℃ Min -2℃
Tue 03	Cloudy.	Max 9℃ Min -6℃
Wed 04	1cm to 2cm New Snow Light snow showers at altitude, rain showers below. Snow Line from 3,059m to resort level (2,840m).	Max 3℃ Min -4℃
Thu 05	Fair.	Max 6℃ Min -6℃
Fri 06	1cm New Snow Light snow showers. Snow falling to resort level (2,840m).	Max 5℃ Min -3℃

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 00:42 NZDT, next update expected imminently.

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

Snow Forecast near Keystone

Snow Forecasts for Ski Resorts near Keystone
Ski Area	48 Hr	7 Day
Vail	11cm	16cm
Arapahoe Basin	11cm	15cm
Loveland Ski Area	11cm	15cm
Copper Mountain	9cm	12cm
Winter Park	5cm	12cm
Breckenridge	7cm	9cm

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.