January weather forecast
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

Weather in January

January, the same as December, in Detroit, Michigan, is another subzero cold winter month, with an average temperature ranging between max 29.3°F (-1.5°C) and min 19.6°F (-6.9°C).

Temperature

January is the coldest month, with an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 19.6°F (-6.9°C).

Humidity

In Detroit, the average relative humidity in January is 84%.

Rainfall

In Detroit, Michigan, in January, during 7.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Detroit, during the entire year, the rain falls for 152.1 days and collects up to 23.43" (595mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. January is the month with the most snowfall in Detroit. Snow falls for 14.5 days and accumulates 4.29" (109mm) of snow.

Ocean temperature

In Detroit, the average water temperature is 33.6°F (0.9°C).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

The average length of the day in January in Detroit is 9h and 30min.
On the first day of January in Detroit, Michigan, sunrise is at 8:01 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:44 pm EST.

Sunshine

January has the least sunshine of the year, with an average of 3.2h of sunshine.

UV index

In Detroit, Michigan, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Detroit?

With an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 19.6°F (-6.9°C), January is the coldest month.

What is the temperature in January in Detroit?

In January, in Detroit, Michigan, the average high-temperature is 29.3°F (-1.5°C), and the average low-temperature is 19.6°F (-6.9°C).

What is the average humidity in January in Detroit?

In January, the average relative humidity is 84%.

How much does it rain in Detroit in January?

In Detroit, during January, the rain falls for 7.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.

What is the snowiest month in Detroit?

January is the month with the most snowfall. Snow falls for 14.5 days and accumulates 4.29" (109mm) of snow.

How much does it snow in Detroit in January?

In Detroit, in January, during 14.5 snowfall days, 4.29" (109mm) of snow is typically accumulated.

What is the water temperature in January in Detroit?

In Detroit, Michigan, in January, the average water temperature is 33.6°F (0.9°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the average length of the day in January in Detroit?

The average day length in January in Detroit is 9h and 30min.

When is the sunrise / sunset in January in Detroit?

On the first day of January, sunrise is at 8:01 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:44 pm EST.

What is the month with the least sunshine in Detroit?

With an average of 3.2h of sunshine, January has the least sunshine of the year in Detroit.

How many hours of sunshine does Detroit have in January?

In January, the average sunshine duration in Detroit, Michigan, is 3.2h.

What is the UV index reading in January in Detroit?

In Detroit, Michigan, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Detroit, MI

Average temperature in January - Detroit, MI
  • Average high temperature in January: 29.3°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in January: 19.6°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in January
Detroit, MI

Average pressure in January - Detroit, MI
  • Average pressure in January: 30.08"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Detroit, MI

Average wind speed in January - Detroit, MI
  • Average wind speed in January: 10.5mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in January
Detroit, MI

Average humidity in January - Detroit, MI
  • Average humidity in January: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (73%).

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Average rainfall in January
Detroit, MI

Average rainfall in January - Detroit, MI
  • Average rainfall in January: 1.34"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is February (1.22").

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Average rainfall days in January
Detroit, MI

Average rainfall days in January - Detroit, MI
  • Average rainfall days in January: 7.1 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in January
Detroit, MI

Average snowfall in January - Detroit, MI
  • Average snowfall in January: 4.29"

The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Detroit, MI

Average snowfall days in January - Detroit, MI
  • Average snowfall days in January: 14.5 days

The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in January
Detroit, MI

Average sea temperature in January - Detroit, MI
  • Average sea temperature in January: 33.6°F

The best month for swimming (with the highest average sea temperature) is August (75.4°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).

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Average daylight in January /
Average sunshine in January
Detroit, MI

Average daylight in January / Average sunshine in January - Detroit, MI
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in January
Detroit, MI

Average sunshine days in January - Detroit, MI
  • Average sunshine days in January: 11.2 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (10.7 days).

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Average UV index in January
Detroit, MI

Average UV index in January - Detroit, MI
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Detroit, MI

Average cloud cover in January - Detroit, MI
  • Average cloud cover in January: 67

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in January
Detroit, MI

Average visibility in January - Detroit, MI
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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