December Weather in River Falls, United States

Last updated: June 24, 2025

In December, the average temperature in River Falls, United States hovers around -5°C (24°F). Expect chilly conditions, with minimum temperatures plunging to -29°C (-21°F) and a maximum of 15°C (60°F). During this period, precipitation totals approximately 53 mm (2.1 in) over the course of 7 days, contributing to an average humidity of 84%. Stay warm and prepare for a mix of winter weather!

December Temperature in River Falls

In December in River Falls, the average temperature is -5°C (24°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -29°C (-21°F). Be prepared for a wide range of temperatures, making it essential to pack for both warm and chilly conditions during your travels.

December Weather in River Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in River Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In River Falls, December typically has an average temperature of -5°C (24°F), with highs reaching up to 15°C (60°F) and lows dropping to around -29°C (-21°F).

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

December Precipitation in River Falls

In River Falls in December, the total precipitation amount is 53 mm (2.1 in) spread over a period of 7 days.

December Precipitation Trends in River Falls

The chart displays monthly precipitation patterns in River Falls, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In River Falls, December typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in River Falls

In River Falls in December, humidity is 84%. With an average temperature of -5°C (24°F), this humidity feels like an icy blanket wrapped around you, making the air feel even colder and more biting, which can be quite uncomfortable for traveling.

December Average Humidity in River Falls

This chart illustrates the average monthly humidity levels in River Falls, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in River Falls is approximately 84%, offering insight into how humid the weather typically is during this month.

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

December UV Index in River Falls

In River Falls in December, 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 River Falls, you can visit Hourly UV Index in River Falls.

Maximum UV Index Levels in River Falls for December

The chart shows the monthly maximum UV Index (UVI) for River Falls in December, 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 December, the maximum UV index in River Falls typically reaches 2, which falls under the low exposure category.

Data source: River Falls December 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 December Weather in River Falls Compares to Other Months

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

This table compares monthly weather conditions in River Falls, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	32 mm (1.3 inches)	87%	low
February Weather	-8°C (18°F)	42 mm (1.7 inches)	90%	moderate
March Weather	1°C (33°F)	58 mm (2.3 inches)	85%	moderate
April Weather	6°C (44°F)	89 mm (3.5 inches)	84%	high
May Weather	15°C (59°F)	143 mm (5.6 inches)	78%	very high
June Weather	21°C (71°F)	125 mm (4.9 inches)	80%	very high
July Weather	23°C (74°F)	109 mm (4.3 inches)	81%	very high
August Weather	21°C (70°F)	126 mm (5.0 inches)	81%	very high
September Weather	18°C (64°F)	112 mm (4.4 inches)	81%	high
October Weather	9°C (48°F)	104 mm (4.1 inches)	84%	moderate
November Weather	1°C (33°F)	41 mm (1.6 inches)	88%	moderate
December Weather	-5°C (24°F)	53 mm (2.1 inches)	84%	low