Keystone · Colorado, United States

Keystone in December

Conditions, weather, crowd levels, and tips for visiting Keystone in December

Is Keystone Open in December?

Open

Keystone is open in December with most terrain and lifts running. Conditions are generally solid, and the mountain offers a good balance of snow quality and crowd levels. This is a popular month for skiing without the peak-period surcharges.

Weather & Snow Conditions

55cm(22in)Packed

55cm

Avg Snowfall

-5°C

Avg High (23°F)

-15°C

Avg Low (5°F)

22"

Snowfall (inches)

In December, Keystone sees an average of 55cm (22 inches) of snowfall. Daytime temperatures typically reach -5°C (23°F) with overnight lows around -15°C (5°F). Standard ski layering works well at these temperatures. A good quality insulated jacket, waterproof gloves, and neck protection will keep you comfortable.

Crowd Levels & Pricing

Crowd Level

High

Day Pass Price

$229

December is one of the busiest periods at Keystone. Expect longer lift lines, especially mid-morning and after lunch. To beat the crowds, arrive at opening, ski the less popular sides of the mountain first, and consider midweek visits. Day pass prices reflect peak demand at $229.

What to Pack for December

Essential Layers

Moisture-wicking base layer (merino or synthetic)
Heavy insulated mid-layer (fleece or down)
Waterproof, breathable outer shell
Standard waterproof ski gloves

Accessories

Helmet (always recommended)
Goggles with versatile lens for variable conditions
Neck gaiter or buff
Lip balm with SPF and hand warmers

Trail Conditions in December

12%(15 trails)

34%(44 trails)

30%(38 trails)

24%(31 trails)

In December, Keystone typically has strong trail coverage with most runs operational. Snow quality is generally consistent, and grooming keeps the primary runs in good shape.

Frequently Asked Questions

Is Keystone open in December?

Yes, Keystone is typically open in December. Expect open season conditions with most terrain accessible.

How much snow does Keystone get in December?

Keystone averages approximately 55cm (22 inches) of snowfall in December. Actual amounts vary year to year. This is a moderate snowfall month with generally reliable conditions.

How crowded is Keystone in December?

Crowd levels at Keystone in December are typically high. Expect longer lift lines, especially during holidays and weekends. Arrive early and focus on less popular lifts to minimize wait times.

What should I wear skiing at Keystone in December?

In December, temperatures at Keystone range from -15°C to -5°C (5°F to 23°F). Wear a moisture-wicking base layer, insulating mid-layer, and waterproof outer shell. Insulated gloves and a neck gaiter are essential.