January Weather in North Sioux City, United States

Last updated: June 24, 2025

In January, the average temperature in North Sioux City, United States is a chilly -5°C (23°F). The temperatures can swing drastically, with a minimum of -31°C (-24°F) and a maximum reaching 12°C (54°F). This month sees a total precipitation of 28 mm (1.1 in) spread over 4 days, while the average humidity sits at a brisk 80%.

January Temperature in North Sioux City

In January in North Sioux City, the average temperature is -5°C (23°F). Maximum temperatures can reach 12°C (54°F), while minimums can plunge as low as -31°C (-24°F). Be prepared for a range of temperatures and dress in layers to ensure comfort during your travels.

January Weather in North Sioux City: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in North Sioux City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Sioux City, January typically has an average temperature of -5°C (23°F), with highs reaching up to 12°C (54°F) and lows dropping to around -31°C (-24°F).

Data source: Temperature data for North Sioux City generated using information from the Copernicus Climate Change Service.

January Precipitation in North Sioux City

In North Sioux City in January, the precipitation amount is 28 mm (1.1 in) over the course of 4 days.

January Precipitation Trends in North Sioux City

The chart displays monthly precipitation patterns in North Sioux City, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In North Sioux City, January typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in North Sioux City

In North Sioux City in January humidity is 80%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm while navigating the frosty air.

January Average Humidity in North Sioux City

This chart illustrates the average monthly humidity levels in North Sioux City, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in North Sioux City is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in North Sioux City

In North Sioux City in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in North Sioux City, you can check the information here.

Maximum UV Index Levels in North Sioux City for January

The chart shows the monthly maximum UV Index (UVI) for North Sioux City in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in North Sioux City typically reaches 3, which falls under the moderate exposure category.

Data source: North Sioux City January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in North Sioux City Compares to Other Months

Weather in North Sioux City varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in North Sioux City, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in North Sioux City, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	28 mm (1.1 inches)	80%	moderate
February Weather	-5°C (23°F)	29 mm (1.2 inches)	84%	moderate
March Weather	3°C (38°F)	81 mm (3.2 inches)	75%	moderate
April Weather	9°C (48°F)	80 mm (3.2 inches)	79%	very high
May Weather	16°C (61°F)	140 mm (5.5 inches)	74%	very high
June Weather	23°C (74°F)	102 mm (4.0 inches)	81%	extreme
July Weather	25°C (77°F)	66 mm (2.6 inches)	82%	very high
August Weather	23°C (73°F)	109 mm (4.3 inches)	80%	very high
September Weather	20°C (68°F)	101 mm (4.0 inches)	75%	very high
October Weather	10°C (51°F)	77 mm (3.0 inches)	77%	moderate
November Weather	3°C (38°F)	27 mm (1.0 inches)	85%	moderate
December Weather	-2°C (29°F)	41 mm (1.6 inches)	83%	low