Teton Park Road
The Taggart-to-Signal Mountain section normally becomes nonmotorized in winter; groomed use is snow- and season-dependent.
December · Teton Park Road
What to see and do in Grand Teton in December
Choose a December outing that fits the route, weather and effort involved.
Teton Range from the highway corridor
Main highways are the winter driving spine; use safe designated stops for mountain views.
December · Teton Range from the highway corridor
Grand Teton weather in December
December’s normal high is 24°F and low is 4°F, with 3.10 inches of precipitation. Moran 5WNW at about 6,805 ft represents the northern valley near Jackson Lake. Mountain trails can be colder and keep snow into summer. These are station averages, not a mountain forecast.
Cooler Hotter
Jan
High24°F
Low1°F
Precip · in2.90
Feb
High30°F
Low4°F
Precip · in2.31
Mar
High39°F
Low12°F
Precip · in2.34
Apr
High46°F
Low21°F
Precip · in2.16
May
High56°F
Low31°F
Precip · in2.36
Jun
High67°F
Low37°F
Precip · in1.75
Jul
High77°F
Low42°F
Precip · in1.02
Aug
High76°F
Low40°F
Precip · in1.28
Sep
High66°F
Low34°F
Precip · in1.64
Oct
High51°F
Low25°F
Precip · in1.92
Nov
High35°F
Low14°F
Precip · in2.61
Dec
High24°F
Low4°F
Precip · in3.10
Grand Teton crowds in December
December averages 49,334 recreation visits, 7% of the peak monthly average in July.
LowestLowModerateHighPeakAverage month: 292,291December
Tips for your December visit
Check the approach before choosing the rest of the day.
AMoose EntranceBMoran EntranceCGranite Canyon Entrance
- Selected main highway
- Selected roads with winter vehicle closures
- Park boundary
Moose Entrance
Reach Moose and Taggart Lake from the south; Teton Park Road beyond Taggart Lake is closed to vehicles for winter.
How we built this page.
An independent guide using official data. Not affiliated with or endorsed by the National Park Service.
- Crowds
- 2021–2025 monthly averages. NPS recreation visits, compared with the park’s own busiest month. Visits are not unique visitors or a count of people on a trail.
- Weather
- 1991-2020 climate normals. NOAA’s Moran 5WNW HCN station. These describe typical weather at the station, not every part of the park or a forecast.
- Roads & lodging
- Normal seasonal schedules. NPS guidance and official operator information. Confirm access, hours and availability before you travel.
Historical records and data-quality checks
- Visit history: 1979–2025 NPS monthly recreation visits.
- Weather history: 1911–2025 daily observations, separate from climate normals. We average daily highs and lows and total the rain for each month.
- Complete months only: every day must pass our quality checks for that metric. Missing or incomplete records stay blank; we never interpolate.
- Excluded measurements: flagged, presumed-zero and lagged values. Trace rain counts as zero measurable rainfall.