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Keystone ski resort

Part of Summit County · 5 ski areas

BreckenridgeCopper MountainArapahoe BasinLoveland Ski Area
View all Summit County conditions →
Epic PassView resorts
Tier C — ENSO-proof

📷 Keystone

North America

Keystone

Pre-season — not open yet

Projected to open October 25, 2026

Conditions data updated Fri, Aug 28, 09:00 AM UTC · informational only

Pre-season — not open yet

Weather data is still collected for informational purposes.

Last Snowfall

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Past 24 Hours

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Past 48 Hours

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Past 10 Days

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14-Day Forecast

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Snow Depth

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🎿

Powder Days

6

2026–27 season

Updated: Aug 28, 9:00 AM•Weather at base: 2830m

Overview

Keystone is a ski resort in North America, United States, currently not operating today (Projected to open October 25, 2026). Conditions last updated 2026-08-28 09:00 UTC.

Resort Guide

Keystone Resort is located in Colorado’s Rocky Mountains and features over 3,000 acres of skiable terrain across three distinct peaks. The resort offers a family-friendly atmosphere with night skiing, a variety of terrain parks, and a dedicated learning area for beginners. Signature experiences include mountaintop dining, snowcat skiing, and a lively village with shops and restaurants. Keystone stands out for its extensive night skiing and diverse terrain suitable for all ability levels.

Resort Info

Summit3782m
Base2830m
Vertical952m
Lifts21
Runs140
Skiable Area3148 acres
Average snowfall235 inches / 597 cm
CountryUnited States
Visit Resort Website →Follow on Instagram →View Trail Map →

Season dates

Projected openingOctober 25, 2026

Future dates are operator estimates and may change.

Ski passes

Epic Pass

Epic Pass

View resorts →

Access tiers change by season — confirm benefits on the pass operator's site.

Top Après Ski

9280' Taphouse – A popular après-ski destination in Keystone, 9280' Taphouse is known for its lively atmosphere, extensive craft beer selection, and prime location in River Run Village, making it a favorite spot for skiers to unwind with drinks and casual bites after a day on the slopes.

Snow Summary

3782mECMWF Model

Updated Aug 28, 2026 at 9:00 AM

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24h
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Past 10d
14-Day Forecast
0
Prev10d
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Now28
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S29
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S30
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M31
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T1
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W2
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T3
Past
Today
Forecast

Snowfall Forecast Maps

Rockies & Southwest region

Current Conditions

Reported Fri, Aug 28, 09:00 AM UTC

Base

2830m

Temp

8.9°C

Wind

1.8km/h

Snow Depth

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14-Day Forecast

0cm

Mid-Mountain

3306m

Temp

5.8°C

Wind

1.8km/h

Snow Depth

--

14-Day Forecast

0cm

Summit

3782m

Temp

2.7°C

Wind

1.8km/h

Snow Depth

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14-Day Forecast

0cm

El Niño Outlook · Winter 2026-27

Keystone El Niño rank & forecast

Keystone ranks #208 of 488 SnowSure resorts — Tier C, 0% in strong El Niño winters.

Tier C — ENSO-proof: Strong El Niño winters looked like a normal year here — within about ±3% of this resort’s own 30-year snowfall average. Not a jackpot, not a bust: a hedge if you’re planning around El Niño.

#208 of 488Tier C — ENSO-proof

Strong-event signal: 0% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Keystone averaged +0% versus its own 30-year snowfall baseline — effectively ENSO-proof. Keystone has held within a few percent of normal across every phase of the Pacific cycle, making it one of the safest bets of a record El Niño winter 2026-27. Analog winters: '97-98 -17%, '15-16 +2%, '23-24 +16%.

'97-98 −17%'15-16 +2%'23-24 +16%

Signal = average snowfall in the three strongest El Niño winters since 1996 ('97-98, '15-16, '23-24) vs this resort's own 30-year ERA5 baseline. n=3 — a lean, not a law. Updated monthly against measured snowfall Dec–Mar.

Full El Niño report →

Live Conditions

Keystone Webcams

All Webcams

Keystone Resort / BrownRice

Keystone Resort / BrownRice

Keystone Resort / BrownRice

Keystone Resort / BrownRice

Keystone Resort / BrownRice

5 webcams • Click to expand

Snow Stake Cam

All Snow Stake Cams

Keystone Resort

1 snow stake cam • Click to expand

Local Reports

0 reports
SnowSure™ Forecast Range

Daily Snowfall Forecast by Model

Black line = verified SnowSure™ blend (not a simple average). Weights update weekly from measured snowfall at SNOTEL stations and resort reports.

SnowSure™ blend — verified model weighting

The black line is not a simple average. For Keystone (rockies), we combine seven global weather models using weights learned from daily forecast verification — comparing each model's prediction to measured snowfall (SNOTEL, resort reports, ERA5).

  • 1.Horizon buckets: days 1–3, 4–7, and 8–14 each get separate weights — short-range skill differs from long-range.
  • 2.Regional calibration: weights come from verified error in this geography (Rockies, Alps, Japan, etc.), recalculated weekly.
  • 3.Ground truth only: we never grade a forecast against another model — only against measured snow.

Building verification history for this resort.

How we verify forecasts →

Hourly Forecast Detail

AM / PM / Night breakdown with wind and freezing level

NWP models refresh up to 4× daily · Last synced Aug 28, 9:00 AM

Hourly Forecast Detail
 
Today
16 / 25.4mm
Sat, Aug 29
15 / 25.2mm
Sun, Aug 30
13 / 12mm
Mon, Aug 31
12 / 27.5mm
Tue, Sep 1
13 / -10.9mm
Wed, Sep 2
13 / -1
PeriodAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Snow (cm)000000000000000000
Precip (mm)04.70.701.33.90.40.70.91.841.700.80.1000
Temp (°C)101359145612459341236134
Wind (km/h)51129154715334241448134
Gusts (km/h)204116344726304619163826264030314727

14-Day Snow Forecast by Model

Summit elevation (3782m)

ECMWF
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GFS
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GEM
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JMA
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ICON
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Météo-Fr
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SnowSure™
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10-Day Forecast

Today

28

🌧️

16.4°

1.7°

14 km/h

Sat

29

🌧️

14.6°

2.4°

17 km/h

Sun

30

🌧️

12.9°

1°

17 km/h

Mon

31

🌧️

12°

1.7°

5 km/h

Tue

1

🌧️

12.5°

-1.5°

14 km/h

Wed

2

☁️

13.4°

-0.7°

15 km/h

Thu

3

🌧️

14.4°

-1°

8 km/h

Fri

4

☁️

15.9°

3.1°

12 km/h

Sat

5

🌧️

16°

0.7°

16 km/h

Sun

6

🌧️

13.9°

1°

19 km/h

Summit elevation (3782m) • ECMWF model

Avalanche

Off-season — no rating published

Colorado Avalanche Information Center

Watch for signs of unstable snow such as recent avalanches, cracking in the snow, and audible collapsing. Avoid traveling on or under similar slopes.

Read the official bulletin ↗

SnowSure relays the official avalanche bulletin and does not issue avalanche forecasts. Read the full bulletin at the issuer’s link and make your own terrain decisions. Not a substitute for avalanche education, equipment, or local knowledge.

Getting There

Drive times & access

Last updated 9:07 AM

3 sensors nearby

Official map ↗

Drive conditions

Quiet — No winter restrictions — typical off-season pavement

No chain controls or closures on the highways SnowSure watches near Keystone. Nearest roadside sensor (I-70 209.85 Westbound : 3.8 mile West of Eisenhower Johnson Memorial Tunnel, 6.8 km): Above freezing, air 5°C. Late-season / summer readings are not a winter forecast. The resort road status and the official DOT map are authoritative — re-check before you drive.

SnowSure take from the live sensors. Not the resort's road status.

Roadside weather sensors

I-70 209.85 Westbound : 3.8 mile West of Eisenhower Johnson Memorial Tunnel

6.8 km · CDOT

Above freezing

Road surface
9°C
Air
5°C
Wind
5 km/h
Precip
no precipitation

Updated 2:04 AM

I-70 210.65 Eastbound : 2.9 mile West of Eisenhower Johnson Memorial Tunnel

6.8 km · CDOT

Above freezing

Road surface
13°C
Air
9°C
Wind
11 km/h

Updated 9:07 AM

I-70 211.80 Westbound : 1.7 mile West of Eisenhower Johnson Memorial Tunnel

7.7 km · CDOT

Above freezing

Road surface
14°C
Air
9°C
Wind
0 km/h

Updated 9:07 AM

Live highway sensors & cameras within ~30–40 km, via CDOT. Conditions on the drive, not the mountain — the resort's own road status is authoritative. Always re-check before a winter drive.

Season vs Historic

Updated Fri, Aug 28, 09:00 AM UTC

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Season Total

This Season to Date

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vs 5-Year Avg

Off-season · 216cm full-season avg

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vs 30-Year Avg

Off-season · 220cm full-season avg

216cm

5-Yr Avg by Now

The last completed season totaled ~172.8 cm. That's 20% below the 5-year average (216 cm). Versus the 30-year baseline: 21% below the 30-year average (220 cm).

Keystone Snow History

Average annual snowfall is 296cm with an average of 135 snowfall days per season. The table below shows monthly averages across 30 seasons of archive data (modeled snowpack at mid-elevation).

Average monthly snowfall history
MonthAvg SnowfallSnowfall DaysAvg Base DepthMax Base DepthBiggest Snowfall
November28.6cm13 days15cm27cm7.5cm
December33.2cm17 days34cm48cm7.4cm
January34.6cm17 days53cm66cm7.2cm
February35.8cm18 days69cm82cm7.1cm
March40.8cm18 days78cm92cm8.6cm
April51.1cm19 days83cm98cm10.2cm
May32.5cm14 days66cm91cm9.1cm

Source: SnowSure archive · Open-Meteo ERA5 reanalysis at mid-elevation. Depth is modeled, not resort-reported.

Season at a Glance

Next season(2026-27)

Opens Oct 25, 2026

Multi-season averages will appear once SnowSure has tracked more than one full season.

ENSO seasonal analog

History · not a forecast

In 10 past El Niño winters at Keystone, ERA5 season snowfall median was 305 cm (120 in), about this resort’s long-term median. This is a historical analog from reanalysis — not a prediction of this winter’s storm track.

Prevailing ONI

El Niño

MJJ 2026 · ANOM +1.39°C

Analog season median

305 cm

10 El Niño winters · ≈ long-term median

All-season median

305 cm

Across 30 ERA5 seasons (2026-27)

PhaseSeasonsMedianp25–p75Recent analogs
El Niñocurrent10305 cm298 cm – 333 cm2023, 2019, 2018, 2015, 2014, 2009
La Niña12306 cm264 cm – 318 cm2022, 2021, 2020, 2017, 2011, 2010
ENSO-neutral8293 cm265 cm – 331 cm2025, 2024, 2016, 2013, 2012, 2003

Season snowfall from Open-Meteo ERA5 reanalysis (~9 km). ENSO phase from NOAA CPC Oceanic Niño Index. Relative phase differences are more trustworthy than absolute cm totals. Source: NOAA CPC Oceanic Niño Index + Open-Meteo ERA5 via SnowSure season archive.

Best Months to Visit

February

Peak Season

January

Peak Season

March

Good

December

Good

Note: Based on typical ski season patterns for this region.

Back to All Destinations

Frequently asked questions about Keystone

Where is Keystone?
Keystone is a ski resort in the United States.
How high is Keystone?
Keystone runs from a base elevation of 2,830 m (9,285 ft) to a summit of 3,782 m (12,408 ft), giving a vertical drop of 952 m (3,123 ft).
How big is Keystone?
Keystone has 3,148 acres (1,274 hectares) of skiable terrain, 140 marked runs and 21 lifts.
Which ski pass covers Keystone?
Keystone is on the Epic Pass. Access terms such as blackout dates and day limits vary by pass tier, so check the pass operator for the current season.
When is ski season at Keystone?
Keystone typically operates from October to April. Exact opening and closing dates shift each year with snowfall — check the resort's current season dates before booking.
How much snow does Keystone get in a typical season?
Keystone averages 235 inches / 597 cm of snowfall in a typical season. Any individual season can run well above or below that.
How will El Niño affect Keystone in winter 2026-27?
El Niño Signal Rank: #208 of 488 SnowSure resorts · Tier C · strong-event signal +0% vs its own 30-yr average. In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Keystone averaged +0% versus its own 30-year snowfall baseline — effectively ENSO-proof. Keystone has held within a few percent of normal across every phase of the Pacific cycle, making it one of the safest bets of a record El Niño winter 2026-27. Analog winters: '97-98 -17%, '15-16 +2%, '23-24 +16%.