January Weather in Roseau, United States

Last updated: June 24, 2025

In January, the average temperature in Roseau, United States hovers around -14°C (8°F), with extremes reaching as low as -39°C (-37°F) and peaking at 4°C (39°F). Expect 20 mm (0.8 in) of precipitation over just 5 days, and a high average humidity of 94%, making it important to dress warmly and prepare for damp conditions!

January Temperature in Roseau

In January in Roseau, the average temperature is -14°C (8°F). Maximum temperatures can reach 4°C (39°F), while minimums can plummet to as low as -39°C (-37°F). Travelers should be prepared for extremely cold weather and pack accordingly to ensure comfort during their stay.

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

The chart illustrates January temperature patterns in Roseau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roseau, January typically has an average temperature of -14°C (8°F), with highs reaching up to 4°C (39°F) and lows dropping to around -39°C (-37°F).

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

January Precipitation in Roseau

In Roseau in January, the precipitation amount is 20 mm (0.8 in) over a period of 5 days.

January Precipitation Trends in Roseau

The chart displays monthly precipitation patterns in Roseau, 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 Roseau, January typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 5 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 Roseau

In Roseau in January humidity is 94%. With an average temperature of -14°C (8°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration exhausting and causing every breath to feel heavy and stinging.

January Average Humidity in Roseau

This chart illustrates the average monthly humidity levels in Roseau, 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 Roseau is approximately 94%, 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 Roseau

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

Maximum UV Index Levels in Roseau for January

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

Data source: Roseau 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 Roseau Compares to Other Months

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

This table compares monthly weather conditions in Roseau, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-14°C (8°F)	20 mm (0.8 inches)	94%	low
February Weather	-15°C (6°F)	22 mm (0.9 inches)	91%	moderate
March Weather	-4°C (25°F)	23 mm (0.9 inches)	90%	moderate
April Weather	3°C (37°F)	38 mm (1.5 inches)	81%	high
May Weather	12°C (54°F)	60 mm (2.4 inches)	74%	very high
June Weather	19°C (66°F)	80 mm (3.2 inches)	75%	very high
July Weather	21°C (70°F)	74 mm (2.9 inches)	74%	very high
August Weather	19°C (66°F)	74 mm (2.9 inches)	77%	very high
September Weather	14°C (57°F)	80 mm (3.1 inches)	75%	high
October Weather	5°C (42°F)	82 mm (3.2 inches)	78%	moderate
November Weather	-4°C (24°F)	30 mm (1.2 inches)	87%	low
December Weather	-10°C (14°F)	34 mm (1.3 inches)	93%	low