Wyoming weather in December
The state broadly agrees with itself in December: afternoons run 30° in Yellowstone and 26° in Jackson Hole, with everywhere else in between.
Based on 2 weather stations. Two stations, both in the mountainous northwest corner where visitors go — the high plains that make up most of Wyoming aren’t measured here.
Jackson Hole & the Tetons
Highs near 26°, nights around 7°, and 16.4 in of snow in a typical December.
| Place | Highs / lows | Wet days | Snow | The short version |
|---|---|---|---|---|
| Jackson Hole | 26° / 7° | 11 | 16.4 in | Cold as it gets, dark early, snow piling up fast. |
Yellowstone Country
Highs near 30°, nights around 12°, and 12.6 in of snow in a typical December.
| Place | Highs / lows | Wet days | Snow | The short version |
|---|---|---|---|---|
| Yellowstone | 30° / 12° | 10 | 12.6 in | Snowcoach season opens and the geyser basins go otherworldly. |
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.