January Weather in Brillion, United States

Last updated: June 24, 2025

In January, the average temperature in Brillion, United States hovers around -6°C (21°F), with minimums plummeting to an icy -31°C (-24°F) and highs reaching a maximum of 10°C (50°F). Expect about 43 mm (1.7 in) of precipitation over approximately 7 days, alongside a notably high average humidity of 89%.

January Temperature in Brillion

In January in Brillion, the average temperature is -6°C (21°F). The maximum can reach 10°C (50°F) and the minimum can be as low as -31°C (-24°F). Be prepared for chilly weather and dress accordingly if you're planning to travel during this time.

January Weather in Brillion: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Brillion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brillion, January typically has an average temperature of -6°C (21°F), with highs reaching up to 10°C (50°F) and lows dropping to around -31°C (-24°F).

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

January Precipitation in Brillion

In Brillion in January, the total precipitation amount is 43 mm (1.7 in) spread over a period of 7 days.

January Precipitation Trends in Brillion

The chart displays monthly precipitation patterns in Brillion, 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 Brillion, January typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 7 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 Brillion

In Brillion in January, humidity is 89%. With an average temperature of -6°C (21°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling outdoors an arduous task as the cold air mixes with dampness, often leaving you feeling cold and clammy despite layers of clothing.

January Average Humidity in Brillion

This chart illustrates the average monthly humidity levels in Brillion, 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 Brillion is approximately 89%, 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 Brillion

In Brillion 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 Brillion, you can visit Hourly UV Index in Brillion.

Maximum UV Index Levels in Brillion for January

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

Data source: Brillion 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 Brillion Compares to Other Months

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

This table compares monthly weather conditions in Brillion, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	43 mm (1.7 inches)	89%	low
February Weather	-6°C (21°F)	47 mm (1.9 inches)	90%	moderate
March Weather	1°C (34°F)	58 mm (2.3 inches)	87%	moderate
April Weather	6°C (43°F)	98 mm (3.9 inches)	84%	high
May Weather	14°C (57°F)	104 mm (4.1 inches)	77%	very high
June Weather	20°C (68°F)	103 mm (4.1 inches)	75%	very high
July Weather	23°C (73°F)	110 mm (4.3 inches)	74%	very high
August Weather	21°C (70°F)	101 mm (4.0 inches)	73%	very high
September Weather	17°C (63°F)	69 mm (2.7 inches)	78%	high
October Weather	10°C (50°F)	97 mm (3.8 inches)	84%	moderate
November Weather	2°C (36°F)	48 mm (1.9 inches)	89%	moderate
December Weather	-3°C (27°F)	51 mm (2.0 inches)	87%	low