May Weather in Arco, United States

Last updated: June 24, 2025

In May, the average temperature in Arco, United States hovers around 11°C (51°F). This season can bring significant variability, with temperatures ranging from a chilly -4°C (25°F) to a warm 30°C (86°F). Expect approximately 50 mm (2.0 in) of precipitation spread over 9 days, contributing to an average humidity of 66%.

May Temperature in Arco

In May in Arco, the average temperature is 11°C (51°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -4°C (25°F). This variation offers travelers a chance to experience a wide range of weather, so it's advisable to pack accordingly for both warm days and chilly nights.

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

The chart illustrates May 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, May typically has an average temperature of 11°C (51°F), with highs reaching up to 30°C (86°F) and lows dropping to around -4°C (25°F).

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

May Precipitation in Arco

In Arco in May, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

May Precipitation Trends in Arco

The chart displays monthly precipitation patterns in Arco, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Arco, May typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Arco

In Arco in May humidity is 66%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill that can make traveling uncomfortable, as it clings to your clothes and seeps into your bones, leaving you yearning for warmth and dryness.

May Average Humidity in Arco

This chart illustrates the average monthly humidity levels in Arco, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Arco is approximately 66%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Arco

In Arco in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Arco.

Maximum UV Index Levels in Arco for May

The chart shows the monthly maximum UV Index (UVI) for Arco in May, 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 May, the maximum UV index in Arco typically reaches 10, which falls under the very high exposure category.

Data source: Arco May 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 May 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 May’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 May’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