Detroit, Michigan weather in December

Averages from 2021–2025 (155 days of record).

Average high: 40°F
Average low: 28°F
Rainy days: ~11 per month
Total precipitation: 2.9 in
Warmest recorded: 62°F
Coldest recorded: -1°F

Expect December days in Detroit, Michigan to top out around 40°F and cool to about 28°F overnight, with roughly 11 days of measurable rain across the month. In recent years December has ranged from -1°F to 62°F.

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Current Detroit, Michigan forecast → · Historical data by Open-Meteo (ERA5).