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

January 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
January is the peak of winter in Detroit and has a moderately high humidity of 75%. The weather is characterized by extremely low temperatures in the range of 17.6°F (-8°C) and 33.8°F (1°C). Occasionally during nights, the temperature drops below 14°F (-10°C) due to cold winter winds that dominate throughout the season.
Snow falls for an average of eleven days and collects the year's highest accumulation of 12.6" (320mm). With approximately eleven rainy days and low precipitation of 2" (50.8mm) January remains the driest month of the year. The sun shines for an average of three hours per day making most days gloomy and mildly wet. The sea temperature in January is 37.4°F (3°C) on average, and activities around the lakes are virtually non-existent.
  • The average high temperature in January: 0°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 January: -7.2°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 January: 74.7%

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 January: 49.8mm

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 January: 13.1 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 January: 317.5mm

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 January: 10.4 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 January: 3°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 January: 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 January: 3.9h

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 January: 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).

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