January Weather in North Spearfish, United States

Last updated: June 24, 2025

In North Spearfish, United States, the average temperature in January hovers around -4°C (26°F). However, be prepared for a wide range of conditions, with minimum temperatures dipping as low as -29°C (-19°F) and a maximum of 13°C (55°F). The region experiences approximately 23 mm (0.9 in) of precipitation over about 6 days, coupled with an average humidity of 77%.

January Temperature in North Spearfish

In January in North Spearfish, the average temperature is -4°C (26°F), with maximums reaching 13°C (55°F) and minimums dropping as low as -29°C (-19°F). Be prepared for extreme temperature variations when traveling during this time.

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

The chart illustrates January temperature patterns in North Spearfish, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Spearfish, January typically has an average temperature of -4°C (26°F), with highs reaching up to 13°C (55°F) and lows dropping to around -29°C (-19°F).

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

January Precipitation in North Spearfish

In North Spearfish in January, the precipitation amount is 23 mm (0.9 in) spread over 6 days.

January Precipitation Trends in North Spearfish

The chart displays monthly precipitation patterns in North Spearfish, 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 Spearfish, January typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 6 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 Spearfish

In North Spearfish in January humidity is 77%. With an average temperature of -4°C (26°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm.

January Average Humidity in North Spearfish

This chart illustrates the average monthly humidity levels in North Spearfish, 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 Spearfish is approximately 77%, 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 Spearfish

In North Spearfish 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 Spearfish, you can check the information here.

Maximum UV Index Levels in North Spearfish for January

The chart shows the monthly maximum UV Index (UVI) for North Spearfish 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 Spearfish typically reaches 3, which falls under the moderate exposure category.

Data source: North Spearfish 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 Spearfish Compares to Other Months

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

This table compares monthly weather conditions in North Spearfish, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	23 mm (0.9 inches)	77%	moderate
February Weather	-6°C (21°F)	35 mm (1.4 inches)	80%	moderate
March Weather	1°C (35°F)	40 mm (1.6 inches)	70%	high
April Weather	4°C (40°F)	77 mm (3.0 inches)	70%	very high
May Weather	11°C (51°F)	100 mm (3.9 inches)	76%	very high
June Weather	18°C (65°F)	66 mm (2.6 inches)	84%	extreme
July Weather	22°C (71°F)	93 mm (3.7 inches)	85%	extreme
August Weather	20°C (68°F)	60 mm (2.4 inches)	84%	very high
September Weather	15°C (60°F)	46 mm (1.8 inches)	77%	very high
October Weather	6°C (43°F)	65 mm (2.6 inches)	73%	moderate
November Weather	2°C (36°F)	23 mm (0.9 inches)	74%	moderate
December Weather	-2°C (29°F)	32 mm (1.3 inches)	79%	low