Bozeman weather in December

December in Bozeman: freezing, dry, with clean air — a good time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Bozeman🇺🇸 United States · Rockies · Trekking63
  1. 59Jan
  2. 62Feb
  3. 77Mar
  4. 81Apr
  5. 90May
  6. 89Jun
  7. 85Jul
  8. 87Aug
  9. 92Sep
  10. 82Oct
  11. 72Nov
  12. 63Dec

#10 of 12 months in Bozeman · #910 of 1413 destinations to visit in December · comfort 63/100 (tier C)

Days
3°C
Nights
-8°C
Wet days
7
Sun
6 h
Humidity
76%
Daylight
9 h
Bozeman, United States
Photo: Chris06 · CC BY-SA 3.0

Traveller notes on Bozeman in December

Other months in Bozeman

Bozeman-forum threads on a February visit describe Explore Rentals as genuinely the only local agency putting dedicated snow tires on its entire winter fleet, worth considering when renting a car. Regulars call only the Gardiner to Cooke City entrance road genuinely open to wheeled vehicles in February, several posters naming a snow coach or snowmobile tour as required for the rest of Yellowstone. Posters call snow coach day tours genuinely reaching Canyon, covering the Upper and Lower Falls, and Norris Geyser Basin, several regulars naming these the standard winter routes. Regulars call Bozeman genuinely not a great day-trip base for the park, several threads naming a roughly four-hour snow coach ride from Mammoth to the snow lodge as the reason. Posters recommend real planning around snow coach schedules, several regulars calling this standard given how limited winter access is. The record: 1.6C days, -10.1C nights, 32mm across over 8 days and 74 percent humidity.
BozemanFebruaryRegular · February · 1 month ago · Read more on Tripadvisor ↗
Bozeman-forum threads on an October visit describe hiking and biking as still rewarding on a good sunny day, posters calling conditions capable of turning cold and blustery with real snow flurries just as easily. Regulars call state park campgrounds typically open through October even as higher-elevation sites close after Labor Day, a real option for camping this late in the season. Regulars call Yellowstone's interior roads closed on the first Monday of November, posters suggesting late-October dates like the twenty-fourth or twenty-fifth as still reasonably safe. Posters call local services genuinely starting to shut down through October, several businesses running reduced hours ahead of the off-season. Regulars recommend checking Bozone.com for a current events calendar, a real resource for planning around whatever's still running this time of year. The record: 14.8C days feeling like 14C, 0.6C nights, an extraordinarily high 55.4mm across nearly 9 days and 58 percent humidity.
BozemanOctoberRegular · October · 1 month ago · Read more on Tripadvisor ↗
Bozeman-forum threads comparing June and July land firmly on July as the better bet, June still carrying real odds of a wet, unsettled stretch while July settles into warm, mostly clear days ideal for rafting, paddleboarding and getting out on the water generally. Posters describe nights cooling off substantially even after a warm afternoon, mountain-town temperature swings that make an evening layer worth packing regardless of how hot the day ran. The Gallatin Divide and surrounding trails are repeatedly named a top summer backpacking draw, conditions here about as reliable as this part of Montana gets. Regulars call July the genuine start of the settled summer weather window that holds through August before things start turning again in September. The record: 29.4C days feeling like 29C, 12.1C nights, 56 percent humidity, a clean 46 AQI and 13.7 hours of sun.
GallatinJulyRegular · July · 1 month ago · Read more on Tripadvisor ↗
Bozeman-forum threads on January driving conditions are direct that winter here demands real preparation: long stretches of highway between towns with little civilization in between, and posters recommend carrying tire chains and confirming good winter tires before setting out regardless of how clear the forecast looks that morning. Stormy stretches are a real possibility though by no means guaranteed for any given week. Regulars flag January and February as the likeliest months to hit a genuine subzero cold snap, meaningfully more probable than in March. The upside: this is peak season for nearby Bridger Bowl and Big Sky skiing, powder conditions at their best precisely because of the cold. Anyone driving on to Yellowstone is warned road closures and reduced access are standard for the season. The record: a brutal 1.4C by day dropping to -9.6C at night, 25mm across 6.5 days, a notably high 38.5cm of fresh snowfall, 77 percent humidity and 6.7 hours of sun.
GallatinValleyJanuaryRegular · January · 1 month ago · Read more on Tripadvisor ↗

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Bozeman climate normals — December

Daytime high3°C / 37°F🥶 freezing
Nighttime low-8°C / 17°F
Feels like (high)-1°C / 30°F
Rainfall29 mm / 1.2 in☀️ dry
Rainy days7 days
Humidity76%💦 very humid
Dew point-10°C / 15°F
Sunshine6 h/day
Daylight8.7 h
Wind11 km/h / 7 mph
Snowfall40 cm / 15.7 in
Air quality (US AQI)39🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Bozeman in December

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyWinter / Christmas break in United States, school holidays in 2 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Bozeman's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherBozeman's best weather comes in May, June and September — separate windows, not one continuous season.

December coincides with Deep cold snaps.

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Best weatherFair weatherToughest weather

What's on in Bozeman in December

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Closure

    Yellowstone roads closed to cars

    1 Nov – 20 Apr · usually

    Everything but the Gardiner-to-Cooke City road shuts to wheeled traffic for the winter. From mid-December the interior reopens to snowcoach and snowmobile only, which is a booked trip rather than a drive. Source ↗

  • Season

    Hyalite ice-climbing season

    1 Dec – 15 Mar · usuallyIce season

    The canyon road is plowed through the winter specifically to keep the frozen falls reachable, and there are more routes up there than anywhere else in the lower 48. It is busy at weekends and quiet midweek. Source ↗

  • Season

    Ski season

    5 Dec – 15 Apr · usuallyBook early

    Bridger Bowl runs twenty minutes from town from early December to mid-April, and Big Sky an hour south holds on later. The Ridge at Bridger needs an avalanche transceiver, not a lift ticket. Source ↗

  • Hazard

    Deep cold snaps

    15 Dec – 20 Feb · usuallyExtreme cold

    Arctic air spills over the divide a few times each winter and holds the valley below minus twenty for days. Cars need block heaters and the ski hill gets very quiet. Source ↗

  • Season

    Snow season

    Ski season

    About 40 cm of snow falls in the month.

    from the climate normals

What's on around the world in December →

Nearby, and something's on

Within 300 km of Bozeman — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Bozeman?

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Bozeman in December — FAQ

Is December a good time to visit Bozeman?
December in Bozeman: freezing, dry, with clean air — a good time to visit. It ranks #10 of 12 months for Bozeman on SeasonMap's comfort score (63/100).
What is the weather like in Bozeman in December?
In December, Bozeman averages a daily high of 2.9°C and a low of -8.1°C, with about 29.3 mm of rain over roughly 7.4 rainy days.
What is the air quality in Bozeman in December?
Bozeman has a mean US Air Quality Index of about 39 in December.
Does it snow in Bozeman in December?
Bozeman sees roughly 40 cm of snowfall in December.

Within 300 km: Yellowstone National Park's Winter wolves in the Lamar around 20 Dec – 10 Mar, and Grand Teton National Park's Elk on the National Elk Refuge around 1 Dec – 31 Mar.