January Weather in Arco, United States

Last updated: June 24, 2025

In January, the average temperature in Arco, United States hovers around -9°C (16°F). Expect chilling extremes, with minimums plunging to -30°C (-22°F) and maximums reaching up to 7°C (44°F). This month also brings 29 mm (1.1 in) of precipitation over approximately 6 days, resulting in a high average humidity of 91%. Prepare for a wintery experience!

January Temperature in Arco

In January in Arco, the average temperature is -9°C (16°F). Maximums can reach 7°C (44°F), while minimums can be as low as -30°C (-22°F). Travelers should be prepared for cold conditions and dress warmly to enjoy their time in Arco.

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

The chart illustrates January temperature patterns in Arco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arco, January typically has an average temperature of -9°C (16°F), with highs reaching up to 7°C (44°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Arco

In Arco in January, the precipitation amount is 29 mm (1.1 in) over the course of 6 days.

January Precipitation Trends in Arco

The chart displays monthly precipitation patterns in Arco, 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 Arco, January typically receives around 29 mm (1.1 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 Arco

In Arco in January humidity is 91%. With an average temperature of -9°C (16°F), this humidity feels like a heavy veil wrapping around you, making outdoor exploration quite challenging as you navigate through the chilly air that seems to cling to your skin.

January Average Humidity in Arco

This chart illustrates the average monthly humidity levels in Arco, 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 Arco is approximately 91%, 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 Arco

In Arco 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 Arco, you can check the information here.

Maximum UV Index Levels in Arco for January

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

Data source: Arco 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 Arco Compares to Other Months

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

This table compares monthly weather conditions in Arco, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	29 mm (1.1 inches)	91%	moderate
February Weather	-7°C (19°F)	40 mm (1.6 inches)	92%	moderate
March Weather	-1°C (30°F)	30 mm (1.2 inches)	85%	high
April Weather	4°C (40°F)	31 mm (1.2 inches)	76%	very high
May Weather	11°C (51°F)	50 mm (2.0 inches)	66%	very high
June Weather	17°C (63°F)	32 mm (1.3 inches)	62%	extreme
July Weather	23°C (73°F)	7 mm (0.3 inches)	53%	extreme
August Weather	21°C (70°F)	16 mm (0.6 inches)	42%	very high
September Weather	15°C (60°F)	22 mm (0.9 inches)	46%	very high
October Weather	6°C (42°F)	33 mm (1.3 inches)	64%	high
November Weather	0°C (31°F)	22 mm (0.9 inches)	83%	moderate
December Weather	-8°C (18°F)	24 mm (0.9 inches)	87%	moderate