January weather forecast
Detroit, MI

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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 in Detroit, Michigan is characterized by a crisp winter scene. The chilly temperatures, which range from 19.6°F (-6.9°C) to 29.3°F (-1.5°C), make for a period of freezing conditions. This season sees frosty mornings, often developing into cold, overcast days due to high cloud coverage of 67%. The hum of heaters fills homes, as residents brace for the cold. Snowfall is a common sight throughout this month, adding to the magnificent winter landscape.

Temperature

Detroit's January weather, with an average high temperature of 29.3°F (-1.5°C) and an average low temperature of 19.6°F (-6.9°C), tends to be the coldest of the year.

Humidity

The average relative humidity in January is 84%.

Rainfall

In Detroit, in January, during 7.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, in Detroit, there are 152.1 rainfall days, and 23.43" (595mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In Detroit, the average seawater temperature in January is 33.6°F (0.9°C).
Note: In the case of swimming, this is seriously cold, dangerous, and can result in death. Without the safeguard of insulated waterproof attire, hypothermia manifests rapidly.

Daylight

In Detroit, the average length of the day in January is 9h and 30min.
On the first day of January in Detroit, 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

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

UV index

In Detroit, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What month is the coldest in Detroit?

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

How cold is it in Detroit in January?

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

What is the average humidity in January in Detroit?

In January, the average relative humidity is 84%.

How many days does it rain in January in Detroit?

In Detroit, Michigan, in January, during 7.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated.

What is the snowiest month in Detroit?

The month with the most snowfall in Detroit, Michigan, is January, when snow falls for 14.5 days and typically aggregates up to 4.29" (109mm) of snow.

How much does it snow in Detroit in January?

In Detroit, during January, snow falls for 14.5 days and regularly aggregates up to 4.29" (109mm) of snow.

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 extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Detroit have in January?

In Detroit, the average day length in January is 9h and 30min.

What time are sunrise and sunset in January in Detroit?

In January, on the first day of the month, sunrise is at 8:01 am and sunset at 5:10 pm. On the last day of the month, in Detroit, Michigan, 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?

The average sunshine duration in January in Detroit is 3.2h.

How high is the UV index in January in Detroit?

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
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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Detroit, Michigan, USA

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