January weather forecast
Belle Fourche, SD

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Weather in January

The month of January in Belle Fourche, South Dakota, represents the start of the year with its coldest average temperatures. This month, marked contrast to warmer times ahead, presents conditions typical of a harsh winter. While the temperature dips to as low as 17.6°F (-8°C), the highest recorded in the month is a modest 30.7°F (-0.7°C). Snowfall is common and the climate can be biting during the day with blustery gusts touching 18.6mph (29.9km/h). The emergence of a new sun offers little warmth, with the UV index at a minimal level of 2.

Temperature

As Belle Fourche welcomes January, the average high-temperature records at a still freezing cold 30.7°F (-0.7°C), marking an insignificant deviation from the prior month. In Belle Fourche, an average temperature of 17.6°F (-8°C) is noted during January nights.

Humidity

With an average relative humidity of 80%, January is the most humid month.

Rainfall

January is the month with the least rainfall in Belle Fourche. Rain falls for 2.8 days and accumulates 0.43" (11mm) of precipitation.

Snowfall

Months with snowfall in Belle Fourche are January through May, September through December. In Belle Fourche, during January, snow falls for 9 days and regularly aggregates up to 2.32" (59mm) of snow. Throughout the year, there are 52.1 snowfall days, and 23.54" (598mm) of snow is accumulated.

Daylight

The average length of the day in January in Belle Fourche is 9h and 17min.
On the first day of January, sunrise is at 7:32 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:02 pm MST.

Sunshine

In Belle Fourche, South Dakota, the average sunshine in January is 5.7h.

UV index

The months with the lowest UV index in Belle Fourche are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

How cold is January in Belle Fourche?

An average high-temperature, in January, in Belle Fourche, is 30.7°F (-0.7°C) and the average low-temperature is 17.6°F (-8°C).

What is the most humid month in Belle Fourche?

The most humid month in Belle Fourche, South Dakota, is January, with an average relative humidity of 80%.

What is the average humidity in January in Belle Fourche?

In January, the average relative humidity in Belle Fourche is 80%.

What is the driest month in Belle Fourche?

The month with the least rainfall in Belle Fourche, South Dakota, is January, when the rain falls for 2.8 days and typically collects 0.43" (11mm) of precipitation.

How many days does it rain in January in Belle Fourche?

In Belle Fourche, in January, during 2.8 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

How much does it snow in Belle Fourche in January?

In Belle Fourche, South Dakota, during January, snow falls for 9 days and regularly aggregates up to 2.32" (59mm) of snow.

How many hours of daylight does Belle Fourche have in January?

In January, the average day length is 9h and 17min.

What time are sunrise and sunset in January in Belle Fourche?

In January, on the first day of the month, sunrise is at 7:32 am and sunset at 4:25 pm. On the last day of the month, in Belle Fourche, South Dakota, sunrise is at 7:15 am and sunset at 5:02 pm MST.

How many hours of sunshine does Belle Fourche have in January?

The average sunshine duration in January is 5.7h.

When is the lowest UV index in Belle Fourche?

The months with the lowest UV index in Belle Fourche, South Dakota, are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Belle Fourche?

In Belle Fourche, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Belle Fourche, SD

Average temperature in January - Belle Fourche, SD
  • Average high temperature in January: 30.7°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in January: 17.6°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).

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Average pressure in January
Belle Fourche, SD

Average pressure in January - Belle Fourche, SD
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in January
Belle Fourche, SD

Average wind speed in January - Belle Fourche, SD
  • Average wind speed in January: 10.4mph

The windiest months (with the highest average wind speed) are January and October (10.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

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Average humidity in January
Belle Fourche, SD

Average humidity in January - Belle Fourche, SD
  • Average humidity in January: 80%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in January
Belle Fourche, SD

Average rainfall in January - Belle Fourche, SD
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in January
Belle Fourche, SD

Average rainfall days in January - Belle Fourche, SD
  • Average rainfall days in January: 2.8 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (2.8 days).

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Average snowfall in January
Belle Fourche, SD

Average snowfall in January - Belle Fourche, SD
  • Average snowfall in January: 2.32"

The month with the highest snowfall is April (4.88").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Belle Fourche, SD

Average snowfall days in January - Belle Fourche, SD
  • Average snowfall days in January: 9 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Belle Fourche, SD

Average daylight in January / Average sunshine in January - Belle Fourche, SD
  • 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: 5h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

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Average sunshine days in January
Belle Fourche, SD

Average sunshine days in January - Belle Fourche, SD
  • Average sunshine days in January: 19.1 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is April (12.6 days).

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Average UV index in January
Belle Fourche, SD

Average UV index in January - Belle Fourche, SD
  • 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
Belle Fourche, SD

Average cloud cover in January - Belle Fourche, SD
  • Average cloud cover in January: 41

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in January
Belle Fourche, SD

Average visibility in January - Belle Fourche, SD
  • 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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Belle Fourche, South Dakota, USA

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