May Weather in Marion, United States

Last updated: June 24, 2025

In May, the average temperature in Marion, United States is 18°C (64°F), with a minimum dipping to 0°C (33°F) and a maximum rising to 30°C (87°F). Expect about 162 mm (6.4 in) of precipitation spread over 13 days, contributing to an average humidity of 83%.

May Temperature in Marion

In May in Marion, the average temperature is 18°C (64°F). The maximum can reach 30°C (87°F) and the minimum can be as low as 0°C (33°F). This climate makes Marion a versatile travel destination, suitable for both warm-weather activities and cooler excursions.

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 18°C (64°F), with highs reaching up to 30°C (87°F) and lows dropping to around 0°C (33°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 162 mm (6.4 in) spread over 13 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 162 mm (6.4 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 Marion

In Marion in May humidity is 83%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket enveloping you, making outdoor exploring somewhat sticky and requiring frequent hydration breaks.

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 83%, 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 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 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 11, which falls under the extreme 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	3°C (39°F)	108 mm (4.3 inches)	86%	moderate
February Weather	6°C (44°F)	134 mm (5.3 inches)	85%	high
March Weather	9°C (49°F)	114 mm (4.5 inches)	84%	very high
April Weather	13°C (56°F)	164 mm (6.4 inches)	82%	very high
May Weather	18°C (64°F)	162 mm (6.4 inches)	83%	extreme
June Weather	21°C (70°F)	119 mm (4.7 inches)	82%	extreme
July Weather	23°C (74°F)	122 mm (4.8 inches)	80%	extreme
August Weather	22°C (73°F)	144 mm (5.7 inches)	74%	very high
September Weather	20°C (69°F)	152 mm (6.0 inches)	75%	very high
October Weather	15°C (60°F)	184 mm (7.2 inches)	79%	very high
November Weather	8°C (46°F)	90 mm (3.5 inches)	87%	high
December Weather	5°C (42°F)	127 mm (5.0 inches)	87%	moderate