May Weather in Marion, United States

Last updated: June 24, 2025

In May, the average temperature in Marion, United States reaches a pleasant 17°C (64°F), with temperatures ranging from a chilly -1°C (30°F) to a warm 34°C (93°F). Visitors can expect approximately 138 mm (5.4 in) of precipitation over 16 days, while the air remains relatively humid with an average humidity of 81%. Perfect for those who enjoy a temperate climate!

May Temperature in Marion

In May in Marion, the average temperature is 17°C (64°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates May temperature patterns in Marion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marion, May typically has an average temperature of 17°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Marion

In Marion in May, the precipitation amount is 138 mm (5.4 in), falling over a span of 16 days.

May Precipitation Trends in Marion

The chart displays monthly precipitation patterns in Marion, 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 Marion, May typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 16 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 Marion

In Marion in May, humidity is 81%. With an average temperature of 17°C (64°F), this humidity feels like walking through a warm mist, enveloping you in a sticky embrace that can quickly lead to discomfort during long sightseeing excursions.

May Average Humidity in Marion

This chart illustrates the average monthly humidity levels in Marion, 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 Marion is approximately 81%, 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 Marion

In Marion 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 Marion.

Maximum UV Index Levels in Marion for May

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

Data source: Marion 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 Marion Compares to Other Months

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

This table compares monthly weather conditions in Marion, 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 (29°F)	76 mm (3.0 inches)	85%	moderate
February Weather	0°C (32°F)	85 mm (3.3 inches)	85%	moderate
March Weather	5°C (42°F)	106 mm (4.2 inches)	86%	high
April Weather	10°C (51°F)	92 mm (3.6 inches)	87%	very high
May Weather	17°C (64°F)	138 mm (5.4 inches)	81%	very high
June Weather	23°C (73°F)	105 mm (4.1 inches)	82%	extreme
July Weather	24°C (76°F)	106 mm (4.2 inches)	81%	very high
August Weather	23°C (73°F)	101 mm (4.0 inches)	79%	very high
September Weather	20°C (69°F)	70 mm (2.8 inches)	78%	very high
October Weather	14°C (57°F)	103 mm (4.0 inches)	81%	high
November Weather	5°C (41°F)	82 mm (3.2 inches)	89%	moderate
December Weather	2°C (35°F)	67 mm (2.6 inches)	86%	low