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Keystone Snow Forecast - 20th June 2026

Keystone Snow Report and Forecast

ECMWF IFS
GEM
GFS

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Updated 20 June 2026 04:40 PDT

Snow Forecast for Keystone

Snow and Weather from 20 June.

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 (10,761ft)
Next Snow?
There is no snow currently in the forecast for Keystone.

Forecast for today in Keystone

Max 74°F
Min 49°F

Valley temperatures from an overnight low of 49°F to daytime highs around 74°F

Temperature at BaseTemp at Base

Sat
20

Snow unlikely

CloudClearClearClear

Cloudy early, then clear sky later.

Forecast times for Keystone are in Denver (US/Mountain) time zone.

Keystone 7-Day Snow Forecast Overview

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Summary Weather and Snow Forecast for Keystone from OpenMeteo(GFS)
Sat
20
Sun
21
Mon
22
Tue
23
Wed
24
Thu
25
Fri
26
WindSW F4W F4SW F3SW F2SW F2SW F2SW F3
12,205ft
62°F
Clear
57°F
Clear
63°F
Cloud
64°F
Cloud
64°F
Cloud
66°F
Clear
64°F
Clear
SW F4W F3SW F3SW F2SW F2SW F2SW F3
10,761ft
67°F
Clear
62°F
Clear
68°F
Cloud
69°F
Cloud
69°F
Cloud
71°F
Clear
69°F
Clear
S F3SW F3SW F3SW F2SW F2SW F2SW F3
9,318ft
74°F
Clear
70°F
Clear
74°F
Cloud
74°F
Cloud
74°F
Cloud
76°F
Clear
74°F
Clear
Snow Line
Max Town74°F70°F74°F74°F74°F76°F74°F
Min Town49°F45°F42°F46°F46°F46°F43°F

This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.

Snow Reliability

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.

Understanding and predicting Snow Conditions in Keystone

Here are our tips for making the most of a trip to Keystone, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Keystone, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.

Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:

Pistes (Groomers) or Off-Piste

These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.

  • Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
  • Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.

WARNING - skiing off-piste (out-of-bounds) at Keystone is not always controlled (slopes made safe from avalanche risk) or patrolled. Always check local advice, ski with safety kit (and know how to use it), and never ski alone.

Analyzing Weather and Snowfall Forecasts

Whilst no forecast can tell you exactly how snow conditions in Keystone will develop, checking the forecast regularly should give you an idea of what to expect.

New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.

Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.

Predicting Future Snow Quality

Regularly check our snow and weather forecasts for Keystone for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.

Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.