January weather forecast
Harrisburg, SD

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Weather in January

Cold and snowy best describe January weather in Harrisburg, South Dakota. The region sees its most frigid temperatures during this month, with a maximum of 24.1°F (-4.4°C) and minimum down to 10.6°F (-11.9°C). It's not unusual to see significant snow, making it popular for winter sports enthusiasts. However, the limited sunlight hours and sometimes dense fog might impede outdoor activities.

Temperature

January, on average, is the coldest month, registering a high temperature of 24.1°F (-4.4°C) and a low of 10.6°F (-11.9°C).

Humidity

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

Rainfall

January, February and November are months with the least rain in Harrisburg, South Dakota, when the rain falls for 3.3 days and typically aggregates up to 0.67" (17mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Harrisburg, in January, snow falls for 9.5 days, with typically accumulated 2.91" (74mm) of snow. Throughout the year, there are 40.5 snowfall days, and 16.77" (426mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 24min.
On the first day of the month, sunrise is at 7:59 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:43 am and sunset at 5:36 pm CST.

Sunshine

January has the least sunshine of the year in Harrisburg, with an average of 4.1h of sunshine.

UV index

The months with the lowest UV index in Harrisburg are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 during January translates into the following directions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

What month is the coldest in Harrisburg?

January stands out as Harrisburg's coldest month, with temperatures ranging between an average high of 24.1°F (-4.4°C) and a low of 10.6°F (-11.9°C).

How cold is January in Harrisburg?

The high-temperature, in January, in Harrisburg, records 24.1°F (-4.4°C), while the low-temperature is 10.6°F (-11.9°C).

What is the most humid month in Harrisburg?

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

What is the average humidity in January in Harrisburg?

In January, the average relative humidity is 87%.

What is the driest month in Harrisburg?

January, February and November are months with the least rain in Harrisburg, South Dakota, when the rain falls for 3.3 days and typically aggregates up to 0.67" (17mm) of rain.

How many days does it rain in January in Harrisburg?

In Harrisburg, in January, during 3.3 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How many days does it snow in January in Harrisburg?

In Harrisburg, in January, during 9.5 snowfall days, 2.91" (74mm) of snow is typically accumulated.

How many hours of daylight does Harrisburg have in January?

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

When is the sunrise / sunset in January in Harrisburg?

On the first day of January in Harrisburg, sunrise is at 7:59 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:36 pm CST.

What is the month with the least sunshine in Harrisburg?

The month with the least sunshine in Harrisburg is January, with an average of 4.1h of sunshine.

How many hours of sunshine does Harrisburg have in January?

In January, the average sunshine duration in Harrisburg is 4.1h.

When is the lowest UV index in Harrisburg?

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 Harrisburg?

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Harrisburg, SD

Average temperature in January - Harrisburg, SD
  • Average high temperature in January: 24.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (24.1°F).

  • Average low temperature in January: 10.6°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

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Average pressure in January
Harrisburg, SD

Average pressure in January - Harrisburg, 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 (29.86"Hg).

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Average wind speed in January
Harrisburg, SD

Average wind speed in January - Harrisburg, SD
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in January
Harrisburg, SD

Average humidity in January - Harrisburg, SD
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (66%).

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Average rainfall in January
Harrisburg, SD

Average rainfall in January - Harrisburg, SD
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January, February and November (0.67").

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Average rainfall days in January
Harrisburg, SD

Average rainfall days in January - Harrisburg, SD
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in January
Harrisburg, SD

Average snowfall in January - Harrisburg, SD
  • Average snowfall in January: 2.91"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Harrisburg, SD

Average snowfall days in January - Harrisburg, SD
  • Average snowfall days in January: 9.5 days

The month with the highest number of snowfall days is December (9.9 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
Harrisburg, SD

Average daylight in January / Average sunshine in January - Harrisburg, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in January
Harrisburg, SD

Average sunshine days in January - Harrisburg, SD
  • Average sunshine days in January: 20.2 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is June (10.2 days).

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Average UV index in January
Harrisburg, SD

Average UV index in January - Harrisburg, SD
  • Average UV index in January: 2

The months with the highest UV index are June and July (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
Harrisburg, SD

Average cloud cover in January - Harrisburg, SD
  • Average cloud cover in January: 54

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in January
Harrisburg, SD

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

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