Last updated: October 28, 2026
Part of our Montana travel guides.
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December is when Montana’s winter trip patterns lock in: major ski areas open (or have just opened), Yellowstone’s oversnow season starts mid-month, Glacier stays limited to plowed valley roads, and holiday events fill downtown calendars. Daylight is short—about 8.5 hours near the solstice at Bozeman latitudes—and valley highs often sit near freezing while mountain towns and West Yellowstone run colder (NCEI 1991–2020 normals; solar day-length estimate for ~45–48°N).
This guide covers weather normals for five towns, what’s open at Yellowstone and Glacier, 2026–27 ski opening dates from resort sites, winter driving via MDT, packing, and holiday events confirmed on official pages for 2026. Deeper dives: Yellowstone in winter from Montana, Montana ski resorts compared, Big Sky things to do, West Yellowstone, and Montana hot springs.
General travel information only—not driving, medical, or tax advice. Confirm dates and road status with the linked official sources before you go.
December weather normals (1991–2020)
Monthly normals from NOAA NCEI’s 1991–2020 dataset. Temperatures in °F; precipitation in inches; snowfall in inches where the station publishes a snow normal.
| Town (station) | Station ID | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|---|
| Bozeman (Gallatin Field) | USW00024132 | 31.7 | 9.7 | 0.44 | — |
| Missoula (Intl AP) | USW00024153 | 30.9 | 17.8 | 1.08 | 11.6 |
| Kalispell (Glacier AP) | USC00244558 | 31.0 | 17.2 | 1.50 | 15.9 |
| Billings (Logan Intl AP) | USW00024033 | 36.1 | 19.2 | 0.57 | 9.8 |
| West Yellowstone (Gateway) | USC00248858 | 25.8 | 2.7 | 3.05 | — |
Source: NCEI normals-monthly-1991-2020 (retrieved Oct. 28, 2026). A dash means that station’s snow-normal field was blank in the extract. Normals are long-term averages, not a forecast.
West Yellowstone’s Gateway station is colder and wetter than the valley airports; at 3.05 inches, December is the wettest month in its normals. Billings runs milder at the airport than the mountain gateways.
Daylight and packing
Around the December solstice, daylight at Bozeman’s latitude (~45.7°N) is about 8 hours 40 minutes (calculated from sunrise and sunset geometry); farther north near Kalispell (~48.2°N) it is about 8 hours 20 minutes. Plan outdoor time for midday when possible.
Packing (general): layered insulating clothing, a waterproof outer shell, warm hat and gloves, traction footwear for ice, and a headlamp or flashlight for early dusk. For Yellowstone boardwalks and parking lots, NPS notes icy conditions and recommends traction aids (NPS Explore in Winter). This is not a personal gear endorsement—match kit to your itinerary and the current forecast.
Yellowstone in December
| What | 2026–27 timing | Source |
|---|---|---|
| Most roads / West, South, East entrances closed to regular vehicles | From Nov. 1, 2026 (last wheeled day on most roads: Oct. 31) | NPS news release, Oct. 21, 2026 |
| North Entrance (Gardiner) to Northeast Entrance (Cooke City) | Open to cars year-round, weather permitting | NPS release; Park Roads |
| Oversnow (guided snowmobile / snowcoach) season opens | Dec. 15, 2026 | Park Roads; NPS release |
| Old Faithful Snow Lodge lodging (winter) | Opens Dec. 16, 2026 | Yellowstone National Park Lodges |
| Beartooth Highway (US 212) | Closed for the season | Park Roads |
Early December is the gap between wheeled-road closure and oversnow opening for most of the park. From Gardiner you can still drive Mammoth–Tower–Lamar–Cooke City. From West Yellowstone, oversnow tours begin Dec. 15. Full rules, operators, and lodging: Yellowstone in winter from Montana and West Yellowstone. Road line: (307) 344-2117; text 82190 to 888-777 for park alerts (NPS release).
Glacier in December
Going-to-the-Sun Road is plowed only from West Glacier to Lake McDonald Lodge in winter, weather permitting; the alpine section stays closed and is used for ski/snowshoe travel beyond the plow line (NPS Visiting in Winter). Apgar Visitor Center is listed open Saturday and Sunday in winter; St. Mary and Logan Pass visitor centers are closed (NPS). Lodging is not available inside the park in winter; Apgar Campground Loop B offers primitive camping (NPS).
Base towns: Whitefish, Kalispell, Columbia Falls. Ski: Whitefish Mountain Resort opens Dec. 4, 2026 (WMR hours). Park planning: Glacier trip planner, Best time to visit Glacier.
Ski season: 2026–27 opening dates
Dates are weather-dependent. Confirm on each resort’s site.
| Resort | Posted 2026–27 open | Source |
|---|---|---|
| Big Sky Resort | Wed., Nov. 25, 2026 | Big Sky Opening Day |
| Red Lodge Mountain | Fri., Nov. 27 | Red Lodge Mountain |
| Great Divide (Helena area) | Planned Nov. 28, 2026 (snow-dependent; early season often weekends) | Great Divide hours (via ski comparison) |
| Whitefish Mountain Resort | Fri., Dec. 4, 2026 – Sun., Apr. 4, 2027 | WMR hours & dates |
| Bridger Bowl | Projected Dec. 11, 2026 – Apr. 11, 2027 | Bridger Bowl stats |
| Showdown Montana | No 2026–27 opening date posted when we checked (Oct. 28, 2026) | Showdown |
Full acreage/pass table: Montana ski resorts compared. Big Sky area lodging and activities: Big Sky things to do. Fly-in rentals: BZN, FCA, BIL, MSO.
Winter driving (conditions, not advice)
Check live conditions before every mountain or interstate trip:
- MDT traveler info / 511: 511mt.net and MDT Traveler Information
- Tire chains: MDT may require chains in designated areas when conditions warrant. Posted chain locations include Lookout Pass, Homestake Pass, Bozeman Hill, Marias Pass, Lolo Pass, Targhee Pass, and others (MDT Tire and Chain Laws; MCA 61-9-406 / 61-9-436 as cited by MDT)
- Studded tires: Permitted Oct. 1–May 31 in Montana per MDT’s summary of MCA 61-9-406 (MDT)
This section describes published MDT rules and information channels. It is not driving instruction.
Holiday events confirmed for 2026
Only events with a dated 2026 official page are listed as confirmed. Others are typical annual events—verify that year’s page.
| Event | Date (2026) | Link |
|---|---|---|
| Downtown Billings Holiday Parade (41st annual) | Fri., Nov. 27, 6:30–8:00 p.m. | Downtown Billings |
| Downtown Bozeman Christmas Stroll (46th annual) | Sat., Dec. 5, 4:30–7:30 p.m. | Downtown Bozeman Association |
| Holidays on Higgins (Missoula) | Sat., Dec. 5 (evening festivities 3:00–7:00 p.m.; tree lighting 6:00 p.m.) | Downtown Missoula Partnership; Destination Missoula |
Typical (confirm the current year’s page): many towns run tree lightings, craft fairs, and New Year’s Eve events. ZooMontana and similar venues often post “Holiday Nights” calendars—check the organizer’s site for 2026 dates before listing them as firm.
Hot springs and quieter bases
December is a common month for hot-springs weekends when ski and park plans flex with weather. Hours and fees change—use the linked guide, not memory: Montana hot springs guide.
For West Yellowstone lodging in December: compare hotels in West Yellowstone on Expedia. To compare guided options, see current West Yellowstone tours on Viator. For park-authorized oversnow operators, use the NPS list in Yellowstone in Winter from Montana.
FAQ
Is Yellowstone open in December?
The park is open year-round, but most roads close to cars Nov. 1. You can drive Gardiner–Cooke City all winter. Oversnow travel on other roads starts Dec. 15, 2026 (NPS).
Can I drive Going-to-the-Sun Road in December?
Only the plowed segment from West Glacier to Lake McDonald Lodge, weather permitting (NPS Glacier winter).
When do Montana ski resorts open for 2026–27?
Big Sky lists Nov. 25; Red Lodge Nov. 27; Whitefish Dec. 4; Bridger Bowl projects Dec. 11—see the table above and each resort’s site.
Sources
- NCEI U.S. Climate Normals 1991–2020 (stations USW00024132, USW00024153, USC00244558, USW00024033, USC00248858)
- Yellowstone National Park Lodges (winter lodges): https://www.yellowstonenationalparklodges.com/stay/winter-lodges/
- NPS Yellowstone: https://www.nps.gov/yell/learn/news/26026.htm ; /planyourvisit/parkroads.htm ; /planyourvisit/visiting-yellowstone-in-winter.htm
- NPS Glacier winter: https://www.nps.gov/glac/planyourvisit/winter.htm
- MDT 511 / chains: https://www.511mt.net/ ; https://www.mdt.mt.gov/travinfo/chains.aspx
- Big Sky Opening Day: https://www.bigskyresort.com/events/winter-opening-day
- Whitefish hours: https://skiwhitefish.com/hours-and-dates/
- Bridger Bowl stats: https://bridgerbowl.com/mountain/stats
- Red Lodge Mountain: https://www.redlodgemountain.com/mountain/the-mountain/
- Downtown Billings Holiday Parade 2026: https://downtownbillings.com/event/41st-annual-holiday-parade-2026/
- Downtown Bozeman Christmas Stroll: https://downtownbozeman.org/event/46th-annual-christmas-stroll
- Holidays on Higgins: https://www.missouladowntown.com/holidays-on-higgins/
Cole Bennett edits MontanaHelp, a research-driven guide to moving to and living in Montana. Articles cite official and public sources and are updated as rules and data change. AI tools help research and draft them; a person runs the editorial process and spot-checks one article per batch before it’s published.
AI tools helped research and draft this article. A person runs MontanaHelp’s editorial process and spot-checks one article per batch before it’s published.