January weather forecast
Harrison, SD

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Weather in January

January, like December, is a freezing cold winter month in Harrison, South Dakota, with an average temperature fluctuating between 13.6°F (-10.2°C) and 27.3°F (-2.6°C).

Temperature

January stands out as Harrison's coldest month, with an average high-temperature of 27.3°F (-2.6°C) and a low-temperature of 13.6°F (-10.2°C).

Humidity

With an average relative humidity of 84%, January is the most humid month in Harrison.

Rainfall

In January, in Harrison, the rain falls for 2.9 days. Throughout January, 0.39" (10mm) of precipitation is accumulated. In Harrison, during the entire year, the rain falls for 104.1 days and collects up to 14.29" (363mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Harrison. The months with the most snowfall in Harrison are January and March, with an average 1.93" (49mm) of accumulated snow.

Daylight

In January, the average length of the day in Harrison, South Dakota, is 9h and 24min.
On the first day of January, sunrise is at 8:06 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:43 pm CST.

Sunshine

With an average of 4.7h of sunshine, January has the least sunshine of the year in Harrison.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrison, South Dakota. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What time of the year is the coldest in Harrison?

The coldest period in Harrison, South Dakota, is January, when temperatures fluctuate between an average high of 27.3°F (-2.6°C) and a low of 13.6°F (-10.2°C).

How cold is January in Harrison?

Harrison in January has an average high-temperature of 27.3°F (-2.6°C) and an average low-temperature of 13.6°F (-10.2°C).

What is the most humid month in Harrison?

January is the most humid month in Harrison, South Dakota, with an average relative humidity of 84%.

What is the average humidity in January in Harrison?

In January, the average relative humidity is 84%.

How many days does it rain in January in Harrison?

In January, the rain falls for 2.9 days. Throughout January, 0.39" (10mm) of precipitation is accumulated.

What is the snowiest month in Harrison?

The months with the most snowfall in Harrison are January and March, with an average 1.93" (49mm) of accumulated snow.

How many days does it snow in January in Harrison?

In Harrison, in January, during 8.2 snowfall days, 1.93" (49mm) of snow is typically accumulated.

What is the average length of the day in January in Harrison?

In Harrison, the average day length in January is 9h and 24min.

When are sunrise and sunset in January in Harrison?

In January, on the first day of the month, sunrise is at 8:06 am and sunset at 5:08 pm. On the last day of the month, in Harrison, South Dakota, sunrise is at 7:51 am and sunset at 5:43 pm CST.

What is the month with the least sunshine in Harrison?

With an average of 4.7h of sunshine, January has the least sunshine of the year in Harrison.

How long on average sun shines in January in Harrison?

In January, the average sunshine duration in Harrison, South Dakota, is 4.7h.

What are the months with the lowest UV index in Harrison?

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

How high is the UV index in January in Harrison?

In Harrison, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Harrison, SD

Average temperature in January - Harrison, SD
  • Average high temperature in January: 27.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in January: 13.6°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in January
Harrison, SD

Average pressure in January - Harrison, SD
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in January
Harrison, SD

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

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average humidity in January
Harrison, SD

Average humidity in January - Harrison, SD
  • Average humidity in January: 84%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).

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Average rainfall in January
Harrison, SD

Average rainfall in January - Harrison, SD
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").

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Average rainfall days in January
Harrison, SD

Average rainfall days in January - Harrison, SD
  • Average rainfall days in January: 2.9 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in January
Harrison, SD

Average snowfall in January - Harrison, SD
  • Average snowfall in January: 1.93"

The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Harrison, SD

Average snowfall days in January - Harrison, SD
  • Average snowfall days in January: 8.2 days

The month with the highest number of snowfall days is January (8.2 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
Harrison, SD

Average daylight in January / Average sunshine in January - Harrison, SD
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in January
Harrison, SD

Average sunshine days in January - Harrison, SD
  • Average sunshine days in January: 20.9 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in January
Harrison, SD

Average UV index in January - Harrison, 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
Harrison, SD

Average cloud cover in January - Harrison, SD
  • Average cloud cover in January: 49

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).

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Average visibility in January
Harrison, SD

Average visibility in January - Harrison, 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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Harrison, South Dakota, USA

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