Michigan weather in December
The state broadly agrees with itself in December: afternoons run 33° in Traverse City and 33° in Mackinac Island, with everywhere else in between.
Based on 2 weather stations. Two stations in the vacation north — Detroit and the state’s southern tier run warmer than what’s here, and the Upper Peninsula colder.
Northwest Lower Michigan
Highs near 33°, nights around 22°, and 24.6 in of snow in a typical December.
| Place | Highs / lows | Wet days | Snow | The short version |
|---|---|---|---|---|
| Traverse City | 33° / 22° | 13 | 24.6 in | Lake-effect bands roll in and the season properly begins. |
The Straits
Highs near 33°, nights around 18°, and 1.9 in of rain in a typical December.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Mackinac Island | 33° / 18° | 15 | Ice in the harbor and the whole island to yourself. |
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.