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May Weather in Marion, United States

Last updated: June 24, 2025

In Marion, United States, the average temperature in May hovers around 10°C (50°F). Expect a chill, with minimums dropping to -6°C (21°F), while sunny days can reach as high as 28°C (82°F). With precipitation measuring 80 mm (3.2 in) spread over 14 days, and an average humidity of 80%, it's wise to prepare for a mix of weather—so pack accordingly!

May Temperature in Marion

In May in Marion, the average temperature is 10°C (50°F), with maximums reaching up to 28°C (82°F) and minimums dipping as low as -6°C (21°F). This diverse range of temperatures makes it essential to pack layers for your trip to fully enjoy the experience.

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 10°C (50°F), with highs reaching up to 28°C (82°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec242032395058676655403227
Data source: Temperature data for Marion generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Marion

In Marion in May, the precipitation amount is 80 mm (3.2 in) over the course of 14 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 80 mm (3.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec528253788058213140666870
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Marion

In Marion in May, humidity is 80%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill enveloping you, making traveling somewhat uncomfortable as it seeps into your clothes and clings to your skin, leaving you longing for a cozy indoor refuge.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%89%85%80%78%77%66%67%77%89%95%
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.
JanFebMarAprMayJunJulAugSepOctNovDec246799997532
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.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)51 mm (2.0 inches)93%low
February Weather-7°C (20°F)82 mm (3.2 inches)92%moderate
March Weather0°C (32°F)53 mm (2.1 inches)89%high
April Weather4°C (39°F)78 mm (3.1 inches)85%high
May Weather10°C (50°F)80 mm (3.2 inches)80%very high
June Weather14°C (58°F)58 mm (2.3 inches)78%very high
July Weather19°C (67°F)21 mm (0.8 inches)77%very high
August Weather19°C (66°F)30 mm (1.2 inches)66%very high
September Weather13°C (55°F)40 mm (1.6 inches)67%high
October Weather5°C (41°F)66 mm (2.6 inches)77%moderate
November Weather0°C (32°F)68 mm (2.7 inches)89%moderate
December Weather-3°C (27°F)70 mm (2.7 inches)95%low

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