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January Weather in Detroit, United States

Last updated: June 24, 2025

In January, the average temperature in Detroit, United States hovers around 7°C (45°F), but be prepared for a wide range of conditions; temperatures can dip as low as -14°C (7°F) or soar to a balmy 25°C (78°F). Expect 90 mm (3.5 in) of precipitation spread over 9 days, contributing to a relatively high average humidity of 80%.

January Temperature in Detroit

In January in Detroit, the average temperature is 7°C (45°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop as low as -14°C (7°F). Travelers should be prepared for a wide range of weather conditions, from mild days to cold nights.

January Weather in Detroit: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Detroit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Detroit, January typically has an average temperature of 7°C (45°F), with highs reaching up to 25°C (78°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec454758637280838378665450
Data source: Temperature data for Detroit generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Detroit

In Detroit in January, the precipitation amount is 90 mm (3.5 in) over the course of 9 days.

January Precipitation Trends in Detroit

The chart displays monthly precipitation patterns in Detroit, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Detroit, January typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9014013620919210770958313766106
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Detroit

In Detroit in January, humidity is 80%. With an average temperature of 7°C (45°F), this humidity feels like you're wrapped in a damp blanket, making it quite uncomfortable for traveling and leaving you feeling chilly and clammy as you explore the area.

January Average Humidity in Detroit

This chart illustrates the average monthly humidity levels in Detroit, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Detroit is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Detroit

In Detroit in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Detroit for better planning.

Maximum UV Index Levels in Detroit for January

The chart shows the monthly maximum UV Index (UVI) for Detroit in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Detroit typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Detroit January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Detroit Compares to Other Months

Weather in Detroit varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Detroit, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Detroit, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)90 mm (3.5 inches)80%moderate
February Weather9°C (48°F)140 mm (5.5 inches)79%high
March Weather14°C (58°F)136 mm (5.3 inches)78%very high
April Weather17°C (63°F)209 mm (8.2 inches)78%very high
May Weather22°C (72°F)192 mm (7.6 inches)81%extreme
June Weather26°C (80°F)107 mm (4.2 inches)78%extreme
July Weather28°C (83°F)70 mm (2.8 inches)73%extreme
August Weather28°C (83°F)95 mm (3.8 inches)66%extreme
September Weather25°C (78°F)83 mm (3.3 inches)65%very high
October Weather19°C (66°F)137 mm (5.4 inches)72%very high
November Weather12°C (54°F)66 mm (2.6 inches)82%high
December Weather10°C (50°F)106 mm (4.2 inches)87%moderate

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