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When to go · Big Sky

Big Sky in December

Great month. Inside Big Sky's best window: Dec–Mar (ski), Jun–Sep (hiking, rafting, Yellowstone).

Key facts

Verdict
Great
Temperature
−1°C (30°F) / −12°C (10°F)
average high / low
Rain days
11
Crowds
High
United States overall
Prices
High
United States overall

Verdict

GreatBest and avoid months for Big Sky

Inside Big Sky's best window: Dec–Mar (ski), Jun–Sep (hiking, rafting, Yellowstone).

Is another month better than December?

No other month rates higher than December for Big Sky in this guide.

Weather in December

Long-term averages
  • Big SkyHighs around -1 °C (30 °F), lows around -12 °C (10 °F), rain on about 11 days

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Christmas Day big impact

    25 Dec · United States

    Most businesses closed; flights full from about 20 Dec to 2 Jan.

Crowds and prices

Crowds · United States overall
High
Prices · United States overall
High

United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.

High-price month: see what to book ahead.

Compare two months

Weather, crowds and prices for any two months in Big Sky, side by side.

  • Verdict

    Dec: Great

    Jan: Great

  • Daytime high

    Dec: -1 °C (30 °F)

    Jan: -2 °C (28 °F)

  • Night low

    Dec: -12 °C (10 °F)

    Jan: -13 °C (9 °F)

  • Rain days

    Dec: 11

    Jan: 10 (better)

  • Crowds

    Dec: High

    Jan: Low

  • Prices

    Dec: High

    Jan: Low

  • Festivals listed

    Dec: 1

    Jan: 0

December: Inside Big Sky's best window: Dec–Mar (ski), Jun–Sep (hiking, rafting, Yellowstone).

January: Inside Big Sky's best window: Dec–Mar (ski), Jun–Sep (hiking, rafting, Yellowstone).

Big Sky: figures are long-term averages from this guide, not a forecast.

What to pack

  • A warm coat, hat and gloves for mornings and evenings
  • A rain jacket or umbrella and shoes that dry fast

Build the full packing list for your trip →

Across United States in December →