Detroit
Michigan, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and Climate
Detroit, MI

The downtown city of Detroit, Michigan viewed from a bird
The downtown city of Detroit, Michigan viewed from a bird's eye angle
December brings winter to Detroit with extremely low temperatures in the range of 23°F (-5°C) and 35.6°F (2°C). The nights are extremely cold with temperatures dropping to 17.6°F (-8°C) and below, appreciative of the dominant cold winds from the lake.
Snowfall is experienced for an average of ten and a half days with a high snow accumulation of 9.6" (243.8mm). The daytimes remain mildly cold but tolerable with an average of three hours of sunshine each day.
Outdoor activities reduce considerably as a result of the intense cold and most activities and festival celebrations take place indoors. Skiing and skating are, however, enjoyed. Extra warm winter outfits are necessary for any moment spent outdoors.
  • The average high temperature in December: 2.3°C

The warmest month (with the highest average high temperature) is July (28.6°C).
The month with the lowest average high temperature is January (0°C).

  • The average low temperature in December: -4.4°C

The month with the highest average low temperature is July (17.7°C).
The coldest month (with the lowest average low temperature) is January (-7.2°C).

  • The average humidity in December: 76.7%

The month with the highest relative humidity is December (76.7%).
The month with the lowest relative humidity is May (65.3%).

  • The average rainfall in December: 62.5mm

The wettest month (with the highest rainfall) is June (89.4mm).
The driest month (with the lowest rainfall) is January (49.8mm).

  • The average rainfall days in December: 13.7 days

The month with the highest number of rainy days is December (13.7 days).
The month with the lowest number of rainy days is September (9.5 days).

  • The average snowfall in December: 243.8mm

The month with the highest snowfall is January (317.5mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

  • The average snowfall days in December: 8.5 days

The month with the highest number of snowfall days is January (10.4 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

  • The average sea temperature in December: 5°C

The best month for swimming (with the highest average sea temperature) is August (23°C).
Coldest months (with the lowest average sea temperature) are February and March (2°C).

  • The average daylight in December: 9h

Months with the longest days are May, June and July (Average daylight: 15h).
Months with shortest days are January and December (Average daylight: 9h).

  • The average sunshine in December: 2.8h

The month with most sunshine is July (Average sunshine: 10.2h).
The month with least sunshine is December (Average sunshine: 2.8h).

  • The average UV index in December: 1

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).

deutscheenglishespañolрусский中文