January weather forecast
Rapid City, MI

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Weather in January

January, the same as December, in Rapid City, Michigan, is another subzero cold winter month, with an average temperature varying between 18.9°F (-7.3°C) and 25.7°F (-3.5°C).

Temperature

January, recording an average high temperature of 25.7°F (-3.5°C) and a low temperature of 18.9°F (-7.3°C), is Rapid City's coldest month.

Humidity

With an average relative humidity of 87%, January is the most humid month.

Rainfall

In January, in Rapid City, Michigan, the rain falls for 4.5 days. Throughout January, 1.77" (45mm) of precipitation is accumulated. In Rapid City, during the entire year, the rain falls for 136.2 days and collects up to 24.65" (626mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Rapid City. The month with the most snowfall is January, when snow falls for 21.8 days and typically aggregates up to 6.57" (167mm) of snow.

Daylight

In January, the average length of the day in Rapid City is 9h and 16min.
On the first day of the month, sunrise is at 8:18 am and sunset at 5:10 pm. On the last day of January, sunrise is at 8:01 am and sunset at 5:47 pm EST.

Sunshine

January has the least sunshine of the year, with an average of 1.7h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 1 during January, leads to the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What time of the year is the coldest in Rapid City?

January, with its high-temperature average of 25.7°F (-3.5°C) and a low-temperature average of 18.9°F (-7.3°C), is the coldest month.

How cold is January in Rapid City?

January temperatures in Rapid City vary between a high-temperature of 25.7°F (-3.5°C) and a low-temperature of 18.9°F (-7.3°C).

What is the most humid month in Rapid City?

With an average relative humidity of 87%, January is the most humid month in Rapid City.

What is the average humidity in January in Rapid City?

The average relative humidity in January in Rapid City, Michigan, is 87%.

How much does it rain in Rapid City in January?

In January, in Rapid City, Michigan, the rain falls for 4.5 days. Throughout January, 1.77" (45mm) of precipitation is accumulated.

When does it snow the most in Rapid City?

The month with the most snowfall in Rapid City, Michigan, is January, when snow falls for 21.8 days and typically aggregates up to 6.57" (167mm) of snow.

How many days does it snow in January in Rapid City?

In Rapid City, in January, during 21.8 snowfall days, 6.57" (167mm) of snow is typically accumulated.

What is the average length of the day in January in Rapid City?

In Rapid City, Michigan, the average day length in January is 9h and 16min.

When are sunrise and sunset in January in Rapid City?

On the first day of January, sunrise is at 8:18 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 5:47 pm EST.

What is the month with the least sunshine in Rapid City?

With an average of 1.7h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Rapid City have in January?

The average sunshine duration in January in Rapid City, Michigan, is 1.7h.

What is the month with the lowest UV index in Rapid City?

The months with the lowest UV index in Rapid City are January, February, November and December, with an average maximum UV index of 1.

How high is the UV index in January in Rapid City?

The average daily maximum UV index in January in Rapid City is 1. A UV Index 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
Rapid City, MI

Average temperature in January - Rapid City, MI
  • Average high temperature in January: 25.7°F

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (25.7°F).

  • Average low temperature in January: 18.9°F

The month with the highest average low temperature is August (60.4°F).
The coldest months (with the lowest average low temperature) are January and February (18.9°F).

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Average pressure in January
Rapid City, MI

Average pressure in January - Rapid City, MI
  • Average pressure in January: 30.03"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
Rapid City, MI

Average wind speed in January - Rapid City, MI
  • Average wind speed in January: 12.6mph

The windiest months (with the highest average wind speed) are January, November and December (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in January
Rapid City, MI

Average humidity in January - Rapid City, MI
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and May (77%).

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Average rainfall in January
Rapid City, MI

Average rainfall in January - Rapid City, MI
  • Average rainfall in January: 1.77"

The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is February (1.54").

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Average rainfall days in January
Rapid City, MI

Average rainfall days in January - Rapid City, MI
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is October (17.9 days).
The month with the least rainy days is February (3.9 days).

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Average snowfall in January
Rapid City, MI

Average snowfall in January - Rapid City, MI
  • Average snowfall in January: 6.57"

The month with the highest snowfall is January (6.57").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Rapid City, MI

Average snowfall days in January - Rapid City, MI
  • Average snowfall days in January: 21.8 days

The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Rapid City, MI

Average daylight in January / Average sunshine in January - Rapid City, MI
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in January: 1h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 1h and 42min).

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Average sunshine days in January
Rapid City, MI

Average sunshine days in January - Rapid City, MI
  • Average sunshine days in January: 4.7 days

The month with the most sunshine days is May (14.7 days).
The month with the least sunshine days is January (4.7 days).

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Average UV index in January
Rapid City, MI

Average UV index in January - Rapid City, MI
  • Average UV index in January: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in January
Rapid City, MI

Average cloud cover in January - Rapid City, MI
  • Average cloud cover in January: 83

The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in January
Rapid City, MI

Average visibility in January - Rapid City, MI
  • Average visibility in January: 4mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Rapid City, Michigan, USA

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