May Weather in Zion, United States

Last updated: June 24, 2025

In May, the average temperature in Zion, United States hovers around 9°C (48°F), with a minimum of 1°C (34°F) and a maximum of 18°C (65°F). Expect 155 mm (6.1 in) of precipitation over approximately 13 days, while the average humidity remains high at 78%.

May Temperature in Zion

In May in Zion, the average temperature is 9°C (48°F), with maximums reaching 18°C (65°F) and minimums dropping to as low as 1°C (34°F). This mild weather makes Zion a great destination for travelers looking to explore without extreme temperatures.

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

The chart illustrates May temperature patterns in Zion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zion, May typically has an average temperature of 9°C (48°F), with highs reaching up to 18°C (65°F) and lows dropping to around 1°C (34°F).

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

May Precipitation in Zion

In Zion in May, the precipitation amount is 155 mm (6.1 in) over the course of 13 days.

May Precipitation Trends in Zion

The chart displays monthly precipitation patterns in Zion, 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 Zion, May typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 13 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 Zion

In Zion in May humidity is 78%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that clings to your skin, making outdoor excursions less enjoyable as you navigate the damp air.

May Average Humidity in Zion

This chart illustrates the average monthly humidity levels in Zion, 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 Zion is approximately 78%, 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 Zion

In Zion 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 Zion.

Maximum UV Index Levels in Zion for May

The chart shows the monthly maximum UV Index (UVI) for Zion 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 Zion typically reaches 9, which falls under the very high exposure category.

Data source: Zion 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 Zion Compares to Other Months

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

This table compares monthly weather conditions in Zion, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	78 mm (3.1 inches)	85%	low
February Weather	-2°C (28°F)	79 mm (3.1 inches)	85%	moderate
March Weather	1°C (35°F)	80 mm (3.1 inches)	85%	high
April Weather	4°C (40°F)	116 mm (4.6 inches)	85%	very high
May Weather	9°C (48°F)	155 mm (6.1 inches)	78%	very high
June Weather	15°C (59°F)	96 mm (3.8 inches)	80%	very high
July Weather	21°C (69°F)	62 mm (2.4 inches)	78%	very high
August Weather	22°C (71°F)	58 mm (2.3 inches)	76%	very high
September Weather	19°C (66°F)	83 mm (3.3 inches)	79%	very high
October Weather	12°C (55°F)	150 mm (5.9 inches)	83%	moderate
November Weather	5°C (41°F)	70 mm (2.8 inches)	88%	moderate
December Weather	1°C (35°F)	68 mm (2.7 inches)	81%	low