May Weather in Alta, United States

Last updated: June 24, 2025

In Alta, United States, the average temperature in May hovers around 13°C (56°F). Visitors can expect a wide range of temperatures, with a minimum of -4°C (26°F) and a maximum reaching up to 30°C (87°F). During this time, the region experiences approximately 90 mm (3.5 in) of precipitation over 9 days, contributing to an average humidity of 74%. Prepares for a diverse and dynamic climate!

May Temperature in Alta

In May in Alta, the average temperature is 13°C (56°F), with maximums reaching 30°C (87°F) and minimums dropping as low as -4°C (26°F). This range makes it a great time to visit Alta, as you can experience both warm and cool weather while exploring the local attractions.

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

The chart illustrates May temperature patterns in Alta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alta, May typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (87°F) and lows dropping to around -4°C (26°F).

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

May Precipitation in Alta

In Alta in May, the precipitation amount is 90 mm (3.5 in) over the course of 9 days.

May Precipitation Trends in Alta

The chart displays monthly precipitation patterns in Alta, 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 Alta, May typically receives around 90 mm (3.5 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 Alta

In Alta in May humidity is 74%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, especially for travelers unaccustomed to such conditions.

May Average Humidity in Alta

This chart illustrates the average monthly humidity levels in Alta, 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 Alta is approximately 74%, 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 Alta

In Alta in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Alta.

Maximum UV Index Levels in Alta for May

The chart shows the monthly maximum UV Index (UVI) for Alta 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 Alta typically reaches 11, which falls under the extreme exposure category.

Data source: Alta 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 Alta Compares to Other Months

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

This table compares monthly weather conditions in Alta, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	289 mm (11.4 inches)	84%	moderate
February Weather	4°C (40°F)	295 mm (11.6 inches)	84%	moderate
March Weather	5°C (42°F)	284 mm (11.2 inches)	83%	very high
April Weather	9°C (49°F)	140 mm (5.5 inches)	81%	very high
May Weather	13°C (56°F)	90 mm (3.5 inches)	74%	extreme
June Weather	19°C (66°F)	20 mm (0.8 inches)	64%	extreme
July Weather	23°C (74°F)	3 mm (0.1 inches)	44%	extreme
August Weather	22°C (72°F)	6 mm (0.2 inches)	36%	very high
September Weather	18°C (65°F)	25 mm (1.0 inches)	44%	very high
October Weather	12°C (55°F)	77 mm (3.0 inches)	65%	high
November Weather	8°C (46°F)	163 mm (6.4 inches)	84%	moderate
December Weather	4°C (39°F)	225 mm (8.8 inches)	83%	moderate