January Weather in Fort Pierre, United States

Last updated: June 24, 2025

In January, the average temperature in Fort Pierre, United States hovers around -7°C (20°F), with a potential dip to a chilling -30°C (-22°F) and a rare high of 13°C (55°F). Expect about 15 mm (0.6 in) of precipitation spread over 4 days, accompanied by an average humidity level of 78%. This climate creates a unique winter experience, blending cold air with the moisture needed for a wintry wonderland.

January Temperature in Fort Pierre

In January in Fort Pierre, the average temperature is -7°C (20°F). The maximum can reach 13°C (55°F), while the minimum can plummet to -30°C (-22°F). Be sure to pack warm layers if you're planning a trip during this time to stay comfortable in the extreme temperatures.

January Weather in Fort Pierre: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Fort Pierre, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Pierre, January typically has an average temperature of -7°C (20°F), with highs reaching up to 13°C (55°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Fort Pierre

In Fort Pierre in January, the precipitation amount is 15 mm (0.6 in) occurring over the course of 4 days.

January Precipitation Trends in Fort Pierre

The chart displays monthly precipitation patterns in Fort Pierre, 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 Fort Pierre, January typically receives around 15 mm (0.6 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 Fort Pierre

In Fort Pierre in January humidity is 78%. With an average temperature of -7°C (20°F), this humidity feels like a chilly blanket wrapping around you, making your breath visible and every step through the snow a crisp reminder of the cold while you travel.

January Average Humidity in Fort Pierre

This chart illustrates the average monthly humidity levels in Fort Pierre, 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 Fort Pierre is approximately 78%, 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 Fort Pierre

In Fort Pierre in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Fort Pierre, you can visit Hourly UV Index in Fort Pierre.

Maximum UV Index Levels in Fort Pierre for January

The chart shows the monthly maximum UV Index (UVI) for Fort Pierre 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 Fort Pierre typically reaches 2, which falls under the low exposure category.

Data source: Fort Pierre 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 Fort Pierre Compares to Other Months

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

This table compares monthly weather conditions in Fort Pierre, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	15 mm (0.6 inches)	78%	low
February Weather	-7°C (19°F)	19 mm (0.8 inches)	81%	moderate
March Weather	1°C (34°F)	38 mm (1.5 inches)	71%	moderate
April Weather	7°C (44°F)	49 mm (1.9 inches)	73%	high
May Weather	15°C (59°F)	78 mm (3.1 inches)	75%	very high
June Weather	23°C (73°F)	62 mm (2.4 inches)	82%	very high
July Weather	25°C (78°F)	86 mm (3.4 inches)	83%	very high
August Weather	23°C (74°F)	53 mm (2.1 inches)	82%	very high
September Weather	19°C (66°F)	60 mm (2.3 inches)	73%	very high
October Weather	9°C (48°F)	54 mm (2.1 inches)	71%	moderate
November Weather	2°C (36°F)	11 mm (0.4 inches)	78%	moderate
December Weather	-3°C (27°F)	26 mm (1.0 inches)	76%	low