January weather forecast
North Sioux City, SD

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Weather in January

The first month of the year ushers in some cool temperatures in North Sioux City, South Dakota. Relative to December, January continues the trend of chill, with the mercury often staying below freezing point. Snowfall is expected, blanketing the city in a crisp, white layer. January, however, has shorter daylight hours when compared to the upcoming months of February and March. One notable characteristic of January weather is the high relative humidity of 84%, making it one of the most humid months in the year.

Temperature

North Sioux City's January weather, with an average high temperature of 27°F (-2.8°C) and an average low temperature of 13.1°F (-10.5°C), tends to be the coldest of the year.

Humidity

The most humid month in North Sioux City, South Dakota, is January, with an average relative humidity of 84%.

Rainfall

In North Sioux City, in January, during 3.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In North Sioux City, during the entire year, the rain falls for 122 days and collects up to 21.61" (549mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. January is the month with the most snowfall in North Sioux City. Snow falls for 9.6 days and accumulates 2.95" (75mm) of snow.

Daylight

In North Sioux City, the average length of the day in January is 9h and 29min.
On the first day of the month, sunrise is at 7:55 am and sunset at 5:03 pm. On the last day of January, in North Sioux City, sunrise is at 7:40 am and sunset at 5:37 pm CST.

Sunshine

The month with the least sunshine in North Sioux City is January, with an average of 4.4h of sunshine.

UV index

January is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 1 during January translates into the following directions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in North Sioux City?

The coldest period tends to be January, when average temperatures fluctuate between a high of 27°F (-2.8°C) and a low of 13.1°F (-10.5°C).

How cold is January in North Sioux City?

North Sioux City in January has an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 13.1°F (-10.5°C).

What is the most humid month in North Sioux City?

With an average relative humidity of 84%, January is the most humid month in North Sioux City, South Dakota.

What is the average humidity in January in North Sioux City?

The average relative humidity in January is 84%.

How much does it rain in North Sioux City in January?

In North Sioux City, South Dakota, in January, during 3.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When does it snow the most in North Sioux City?

January is the month with the most snowfall in North Sioux City. Snow falls for 9.6 days and accumulates 2.95" (75mm) of snow.

How many days does it snow in January in North Sioux City?

In January, in North Sioux City, South Dakota, it is snowing for 9.6 days. Throughout January, 2.95" (75mm) of snow is accumulated.

How many hours of daylight does North Sioux City have in January?

In January, the average day length in North Sioux City, South Dakota, is 9h and 29min.

What time are sunrise and sunset in January in North Sioux City?

In January, on the first day of the month, sunrise is at 7:55 am and sunset at 5:03 pm. On the last day of the month, in North Sioux City, South Dakota, sunrise is at 7:40 am and sunset at 5:37 pm CST.

What is the month with the least sunshine in North Sioux City?

January has the least sunshine of the year in North Sioux City, with an average of 4.4h of sunshine.

How long on average sun shines in January in North Sioux City?

In North Sioux City, South Dakota, the average sunshine duration in January is 4.4h.

What is the month with the lowest UV index in North Sioux City?

With an average maximum UV index of 1, January is the month with the lowest UV index in North Sioux City, South Dakota.

What is the UV index intensity in January in North Sioux City?

In North Sioux City, South Dakota, the average daily maximum UV index in January is 1. A UV Index 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
North Sioux City, SD

Average temperature in January - North Sioux City, SD
  • Average high temperature in January: 27°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in January: 13.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in January
North Sioux City, SD

Average pressure in January - North Sioux City, 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).

Average wind speed in January
North Sioux City, SD

Average wind speed in January - North Sioux City, SD
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in January
North Sioux City, SD

Average humidity in January - North Sioux City, 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 (65%).

Average rainfall in January
North Sioux City, SD

Average rainfall in January - North Sioux City, SD
  • Average rainfall in January: 0.75"

The wettest months (with the highest rainfall) are May and June (3.03").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in January
North Sioux City, SD

Average rainfall days in January - North Sioux City, SD
  • Average rainfall days in January: 3.8 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in January
North Sioux City, SD

Average snowfall in January - North Sioux City, SD
  • Average snowfall in January: 2.95"

The month with the highest snowfall is January (2.95").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
North Sioux City, SD

Average snowfall days in January - North Sioux City, SD
  • Average snowfall days in January: 9.6 days

The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
North Sioux City, SD

Average daylight in January / Average sunshine in January - North Sioux City, SD
  • Average daylight in January: 9h and 3min

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 6min).

  • Average sunshine in January: 4h and 2min

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 24min).

Average sunshine days in January
North Sioux City, SD

Average sunshine days in January - North Sioux City, SD
  • Average sunshine days in January: 19.2 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (9.7 days).

Average UV index in January
North Sioux City, SD

Average UV index in January - North Sioux City, SD
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in January
North Sioux City, SD

Average cloud cover in January - North Sioux City, SD
  • Average cloud cover in January: 52

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in January
North Sioux City, SD

Average visibility in January - North Sioux City, 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).

North Sioux City, South Dakota, USA

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