January weather forecast
Detroit, IL

Weather in January

January, like December, in Detroit, Illinois, is a wintry winter month, with temperature in the range of an average high of 33.8°F (1°C) and an average low of 21.6°F (-5.8°C).

Temperature

January is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C).

Humidity

In Detroit, the average relative humidity in January is 78%.

Rainfall

In January, in Detroit, Illinois, the rain falls for 4.5 days. Throughout January, 0.87" (22mm) of precipitation is accumulated. In Detroit, during the entire year, the rain falls for 128.8 days and collects up to 18.35" (466mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. January is the month with the most snowfall in Detroit. Snow falls for 6.3 days and accumulates 2.05" (52mm) of snow.

Daylight

In Detroit, the average length of the day in January is 9h and 45min.
On the first day of January, sunrise is at 7:23 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:21 pm CST.

Sunshine

With an average of 4.4h of sunshine, January has the least sunshine of the year in Detroit.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Detroit?

January is the coldest month in Detroit, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C).

What is the average humidity in January in Detroit?

In Detroit, the average relative humidity in January is 78%.

How much does it rain in Detroit in January?

In January, in Detroit, Illinois, the rain falls for 4.5 days. Throughout January, 0.87" (22mm) of precipitation is accumulated.

When does it snow the most in Detroit?

The month with the most snowfall in Detroit is January, when snow falls for 6.3 days and typically aggregates up to 2.05" (52mm) of snow.

How many days does it snow in January in Detroit?

In Detroit, in January, during 6.3 snowfall days, 2.05" (52mm) of snow is typically accumulated.

How many hours of daylight does Detroit have in January?

The average day length in January in Detroit is 9h and 45min.

What time are sunrise and sunset in January in Detroit?

On the first day of January in Detroit, sunrise is at 7:23 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:21 pm CST.

What is the month with the least sunshine in Detroit?

With an average of 4.4h of sunshine, January has the least sunshine of the year in Detroit, Illinois.

How many hours of sunshine does Detroit have in January?

In Detroit, the average sunshine duration in January is 4.4h.

What is the month with the lowest UV index in Detroit?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in January in Detroit?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Detroit, IL

Average temperature in January - Detroit, IL
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in January
Detroit, IL

Average pressure in January - Detroit, IL
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Detroit, IL

Average wind speed in January - Detroit, IL
  • Average wind speed in January: 9.8mph

The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in January
Detroit, IL

Average humidity in January - Detroit, IL
  • Average humidity in January: 78%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Detroit, IL

Average rainfall in January - Detroit, IL
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days in January
Detroit, IL

Average rainfall days in January - Detroit, IL
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).

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Average snowfall in January
Detroit, IL

Average snowfall in January - Detroit, IL
  • Average snowfall in January: 2.05"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Detroit, IL

Average snowfall days in January - Detroit, IL
  • Average snowfall days in January: 6.3 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Detroit, IL
  • Average daylight in January: 9h and 45min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in January: 4h and 24min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in January
Detroit, IL

Average sunshine days in January - Detroit, IL
  • Average sunshine days in January: 20.5 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in January
Detroit, IL

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Detroit, IL

Average cloud cover in January - Detroit, IL
  • Average cloud cover in January: 52

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).

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Average visibility in January
Detroit, IL

Average visibility in January - Detroit, IL
  • Average visibility in January: 6mi

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

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