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Keystone Snow Forecast - 29th September 2026

Keystone Snow Report and Forecast

ECMWF IFS
GEM
GFS

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Updated 29 September 2026 06:41 BST

Snow Forecast for Keystone

Snow and Weather from 29 September.

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?
There is no snow currently in the forecast for Keystone.

Forecast for today in Keystone

Max 14℃ 57°F
Min 5℃ 41°F

Valley temperatures from an overnight low of 5℃ 41°F to daytime highs around 14℃ 57°F

Temperature at BaseTemp at Base

Tue
29

Snow unlikely

CloudCloudCloudCloud

Cloudy.

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

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Keystone 7-Day Snow Forecast Overview

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Summary Weather and Snow Forecast for Keystone from OpenMeteo(GFS)
Tue
29
Wed
30
Thu
01
Fri
02
Sat
03
Sun
04
Mon
05
WindE F2
3,720m 12,205ft
6℃ 42°F
Cloud
2℃ 35°F
Cloud
+1cm
11℃ 51°F
Clear
12℃ 54°F
Clear
12℃ 53°F
Cloud
13℃ 55°F
Clear
13℃ 55°F
Cloud
NE F4
3,280m 10,761ft
10℃ 49°F
Cloud
4℃ 40°F
Mixed
14℃ 56°F
Clear
15℃ 59°F
Clear
15℃ 58°F
Cloud
16℃ 60°F
Clear
16℃ 60°F
Cloud
2,840m 9,318ft
14℃ 57°F
Cloud
8℃ 47°F
Cloud
16℃ 62°F
Clear
18℃ 64°F
Clear
17℃ 63°F
Cloud
19℃ 65°F
Clear
19℃ 65°F
Cloud
Snow Line

varying 3,659m 12,005ft
to 3,469m 11,381ft

Max Town 14℃ 57°F 8℃ 47°F 16℃ 62°F 18℃ 64°F 17℃ 63°F 19℃ 65°F 19℃ 65°F
Min Town 5℃ 41°F 5℃ 41°F 3℃ 37°F 4℃ 39°F 5℃ 41°F 4℃ 39°F 6℃ 43°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 Forecast near Keystone

Snow Forecasts for Ski Resorts near Keystone
Ski Area 48 Hr 7 DayTuWeThFrSaSuMo
Loveland Ski Area 8cm 3in 8cm 3in
Winter Park 5cm 2in 5cm 2in
Arapahoe Basin 2cm 1in 2cm 1in
Breckenridge 2cm 1in 2cm 1in
Copper Mountain 1cm - 1cm -

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.