January weather forecast
Grand Rapids, MI

The vast cityscape of Grand Rapids, a moderately large town in Michigan and two visible bridges across the river
The vast cityscape of Grand Rapids, a moderately large town in Michigan and two visible bridges across the river

Weather in January

January, the same as December, in Grand Rapids, Michigan, is a freezing cold winter month, with an average temperature varying between 18.7°F (-7.4°C) and 27.7°F (-2.4°C).

Temperature

January is the coldest month, with an average high-temperature of 27.7°F (-2.4°C) and an average low-temperature of 18.7°F (-7.4°C).

Humidity

The most humid month is January, with an average relative humidity of 87%.

Rainfall

In January, the rain falls for 4.2 days. Throughout January, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 103.5 rainfall days, and 9.02" (229mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall in Grand Rapids is January, when snow falls for 11.5 days and typically aggregates up to 1.57" (40mm) of snow.

Daylight

The average length of the day in January is 9h and 26min.
On the first day of the month, sunrise is at 8:13 am and sunset at 5:18 pm. On the last day of January, in Grand Rapids, sunrise is at 7:58 am and sunset at 5:54 pm EST.

Sunshine

The month with the least sunshine is January, with an average of 2.3h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: In January, the average maximum UV index of 1 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged 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. 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 Grand Rapids?

The coldest month is January, with an average high-temperature of 27.7°F (-2.4°C) and an average low-temperature of 18.7°F (-7.4°C).

What is the most humid month in Grand Rapids?

The most humid month in Grand Rapids is January, with an average relative humidity of 87%.

What is the average humidity in January in Grand Rapids?

In Grand Rapids, Michigan, the average relative humidity in January is 87%.

How many days does it rain in January in Grand Rapids?

In January, in Grand Rapids, the rain falls for 4.2 days. Throughout January, 0.55" (14mm) of precipitation is accumulated.

What is the snowiest month in Grand Rapids?

January is the month with the most snowfall in Grand Rapids. Snow falls for 11.5 days and accumulates 1.57" (40mm) of snow.

How much does it snow in Grand Rapids in January?

In Grand Rapids, in January, during 11.5 snowfall days, 1.57" (40mm) of snow is typically accumulated.

What is the average length of the day in January in Grand Rapids?

In Grand Rapids, the average day length in January is 9h and 26min.

When is the sunrise / sunset in January in Grand Rapids?

In January, on the first day of the month, sunrise is at 8:13 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:54 pm EST.

What is the month with the least sunshine in Grand Rapids?

The month with the least sunshine in Grand Rapids is January, with an average of 2.3h of sunshine.

How many hours of sunshine does Grand Rapids have in January?

The average sunshine duration in January in Grand Rapids is 2.3h.

What is the month with the lowest UV index in Grand Rapids?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

How high is the UV index in January in Grand Rapids?

In January, the average daily maximum UV index in Grand Rapids, Michigan, is 1. A UV Index value of 2, and less, symbolizes a low health threat from 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
Grand Rapids, MI

Average temperature in January - Grand Rapids, MI
  • Average high temperature in January: 27.7°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in January: 18.7°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure in January
Grand Rapids, MI

Average pressure in January - Grand Rapids, MI
  • Average pressure in January: 30.07"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Grand Rapids, MI

Average wind speed in January - Grand Rapids, MI
  • Average wind speed in January: 9.6mph

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in January
Grand Rapids, MI

Average humidity in January - Grand Rapids, MI
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in January
Grand Rapids, MI

Average rainfall in January - Grand Rapids, MI
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is March (0.47").

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Average rainfall days in January
Grand Rapids, MI

Average rainfall days in January - Grand Rapids, MI
  • Average rainfall days in January: 4.2 days

The month with the highest number of rainy days is May (13 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in January
Grand Rapids, MI

Average snowfall in January - Grand Rapids, MI
  • Average snowfall in January: 1.57"

The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Grand Rapids, MI

Average snowfall days in January - Grand Rapids, MI
  • Average snowfall days in January: 11.5 days

The month with the highest number of snowfall days is January (11.5 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
Grand Rapids, MI

Average daylight in January / Average sunshine in January - Grand Rapids, MI
  • Average daylight in January: 9h and 26min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 4min).

  • Average sunshine in January: 2h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in January
Grand Rapids, MI

Average sunshine days in January - Grand Rapids, MI
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is September (21 days).
The month with the least sunshine days is April (13.4 days).

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Average UV index in January
Grand Rapids, MI

Average UV index in January - Grand Rapids, MI
  • Average UV index in January: 1

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

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Average cloud cover in January
Grand Rapids, MI

Average cloud cover in January - Grand Rapids, MI
  • Average cloud cover in January: 75

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in January
Grand Rapids, MI

Average visibility in January - Grand Rapids, MI
  • Average visibility in January: 5mi

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

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