Montana weather in December
One place stands in for Montana here — these are Bozeman's numbers, not a statewide average.
Based on 1 weather station, in Bozeman. One station — Bozeman speaks for the mountain valleys of southwest Montana, not for the plains that stretch east of the Rockies.
Bozeman & the Gallatin Valley
Highs near 33°, nights around 15°, and 16.2 in of snow in a typical December.
| Place | Highs / lows | Wet days | Snow | The short version |
|---|---|---|---|---|
| Bozeman | 33° / 15° | 9 | 16.2 in | The snowiest month, the shortest days, the best excuse. |
Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.