May Weather in Alta, United States

Last updated: June 24, 2025

In May, the average temperature in Alta, United States is a comfortable 16°C (60°F). However, temperatures can range from a chilly 1°C (35°F) to a sweltering 35°C (95°F). Expect about 140 mm (5.5 in) of precipitation over 14 days, contributing to an average humidity of 74%.

May Temperature in Alta

In May in Alta, the average temperature is 16°C (60°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 1°C (35°F). Therefore, when traveling during this time, it is advisable to pack layers to accommodate both warm days and cooler evenings.

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 16°C (60°F), with highs reaching up to 35°C (95°F) and lows dropping to around 1°C (35°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 140 mm (5.5 in) over the course of 14 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 140 mm (5.5 inches) of precipitation spread over approximately 14 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 16°C (60°F), this humidity feels like a damp blanket enveloping you, making traveling a bit uncomfortable as you navigate the sticky air and potentially limiting your energy for exploring the sights.

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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, 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 9, which falls under the very high 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	-6°C (21°F)	26 mm (1.0 inches)	80%	moderate
February Weather	-6°C (21°F)	40 mm (1.6 inches)	84%	moderate
March Weather	3°C (37°F)	71 mm (2.8 inches)	75%	moderate
April Weather	8°C (46°F)	88 mm (3.5 inches)	79%	very high
May Weather	16°C (60°F)	140 mm (5.5 inches)	74%	very high
June Weather	23°C (73°F)	127 mm (5.0 inches)	81%	extreme
July Weather	24°C (76°F)	66 mm (2.6 inches)	82%	very high
August Weather	22°C (72°F)	108 mm (4.2 inches)	80%	very high
September Weather	19°C (67°F)	105 mm (4.1 inches)	75%	very high
October Weather	10°C (50°F)	96 mm (3.8 inches)	77%	moderate
November Weather	2°C (36°F)	34 mm (1.3 inches)	85%	moderate
December Weather	-2°C (28°F)	41 mm (1.6 inches)	83%	moderate