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Keystone Weather Forecast - 7 to 16 days - 21st September 2026

Keystone Weather

ECMWF IFS
GEM
GFS

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Weather Forecast for Keystone (2,840m to 3,720m)

Weather Outlook from 21 September.

Keystone Forecast

See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.

Keystone Weather Forecast updated at 21:48 AEST, next update expected 00:00 AEST.

Long-range Snow Outlook for Keystone

 
Snowfall

 
Snow Line

Max 19℃
Min 3℃

Snow unlikely

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Keystone Daily Weather Forecast Detail

16 Day Weather and Snow Forecast for Keystone from OpenMeteo(GFS)
BaseSnow and WeatherTemp
Town
Mon
21
Clear

Clear sky.

Max 17℃
Min 3℃
Tue
22
Cloud

Cloudy.

Max 18℃
Min 6℃
Wed
23
Shwrs

Rain showers.

Max 13℃
Min 7℃
Thu
24
Lt Drizzle

Light drizzle.

Max 16℃
Min 5℃
Fri
25
Drizzle

Drizzle.

Max 14℃
Min 5℃
Sat
26
Clear

Clear sky.

Max 16℃
Min 4℃
Sun
27
Fair

Fair.

Max 19℃
Min 5℃

No significant snowfall is forecast for this period.

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 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.

Keystone Weather Forecast updated at 21:48 AEST, next update expected 00:00 AEST.

Current Snow

For current snow depths and skiing conditions, see our Current Snow Report for Keystone.

For more information about this American Ski Resort, See Also Skiing and Snowboarding in Keystone .

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.