May Weather in Marion, United States

Last updated: June 24, 2025

In Marion, United States, the average temperature in May hovers around 14°C (57°F). Expect lows of -3°C (27°F) and highs reaching up to 34°C (93°F). With an average precipitation of 116 mm (4.5 in) over 13 days, you'll want to be prepared for potential showers. The humidity is relatively high at 82%, adding to the overall climate experience.

May Temperature in Marion

In May in Marion, the average temperature is 14°C (57°F). Maximums can reach 34°C (93°F) and minimums can drop as low as -3°C (27°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 14°C (57°F), with highs reaching up to 34°C (93°F) and lows dropping to around -3°C (27°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 116 mm (4.5 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 116 mm (4.5 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 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

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 82%, 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 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 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 9, 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	-6°C (22°F)	55 mm (2.2 inches)	87%	low
February Weather	-5°C (23°F)	56 mm (2.2 inches)	87%	moderate
March Weather	0°C (33°F)	56 mm (2.2 inches)	86%	moderate
April Weather	6°C (43°F)	97 mm (3.8 inches)	87%	very high
May Weather	14°C (57°F)	116 mm (4.5 inches)	82%	very high
June Weather	19°C (67°F)	112 mm (4.4 inches)	81%	very high
July Weather	22°C (72°F)	83 mm (3.3 inches)	78%	very high
August Weather	21°C (69°F)	96 mm (3.8 inches)	79%	very high
September Weather	17°C (62°F)	90 mm (3.5 inches)	79%	high
October Weather	10°C (50°F)	131 mm (5.2 inches)	82%	moderate
November Weather	2°C (36°F)	58 mm (2.3 inches)	87%	moderate
December Weather	-2°C (28°F)	66 mm (2.6 inches)	86%	low